Re: [ccp4bb] update manager

2024-05-05 Thread David J. Schuller
My mistake, that was on my Fedora 40 host, not my Alma 9 host. Installing 
libxcrypt-compat fixed the problem.


===
 All Things Serve the Beam
 ===
 David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of David J. 
Schuller 
Sent: Sunday, May 5, 2024 10:01 AM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: Re: [ccp4bb] update manager

ccp4um does not work for me.

# ccp4um
/usr/local/xtal/ccp4_master/ccp4-8.0/libexec/python3.7: error while loading 
shared libraries: libcrypt.so.1: cannot open shared object file: No such file 
or directory

---
I recently updated from Scientific Linux 7 to Alma 9. I don't know if this is 
part of the reason or not.

I have version 8.0.017.


===
 All Things Serve the Beam
 ===
 David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Becker, Stefan 

Sent: Sunday, May 5, 2024 9:28 AM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: [ccp4bb] update manager

Dear all,

update manager on ccp4 8.0.017 doesn´t run (two new updates available). Did 
anyone else have this problem?

Stefan



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Re: [ccp4bb] update manager

2024-05-05 Thread David J. Schuller
ccp4um does not work for me.

# ccp4um
/usr/local/xtal/ccp4_master/ccp4-8.0/libexec/python3.7: error while loading 
shared libraries: libcrypt.so.1: cannot open shared object file: No such file 
or directory

---
I recently updated from Scientific Linux 7 to Alma 9. I don't know if this is 
part of the reason or not.

I have version 8.0.017.


===
 All Things Serve the Beam
 ===
 David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Becker, Stefan 

Sent: Sunday, May 5, 2024 9:28 AM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: [ccp4bb] update manager

Dear all,

update manager on ccp4 8.0.017 doesn´t run (two new updates available). Did 
anyone else have this problem?

Stefan



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Re: [ccp4bb] Room temperature change from 25ºC to 20ºC

2024-04-01 Thread David J. Schuller
Looking forward to feedback from the Southern realms as to which should be 
higher; SSRT or WSRT.


===
 All Things Serve the Beam
 ===
 David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Nukri Sanishvili 

Sent: Monday, April 1, 2024 10:47 AM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: Re: [ccp4bb] Room temperature change from 25ºC to 20ºC

Excellent idea, Mark!
I think the solution to your dilemma is rather straightforward: we introduce a 
Winter Standard Room Temperature (WSRT) and a Summer Standard Room Temperature 
(SSRT). This way, the folks from locales closer to the equator can always use 
SSRT, while those from more temperate climates can take advantage of using both 
WSRT and SSRT.
The added benefit of this approach will be inclusion of researchers closer to 
either of the poles (which, forgive me for saying it, you so egregiously 
omitted from your considerations). Similar to the tropics, they could use just 
one standard - WSRT.
Hope it helps your and so many young scientists' careers.
Best wishes,
Nukri



On Mon, Apr 1, 2024 at 9:29 AM Mark 
mailto:mjvanra...@cnb.csic.es>> wrote:
Room temperature change from 25ºC to 20ºC

As a member of the inter-society standards commission St-Incent I have been 
asked to take the bearings of the structural biology community regarding a 
proposal to lower the universally understood room temperature from 25ºC (77º 
Fahrenheit) to 20ºC (68º Fahrenheit). Obvious advantages would be less heating 
necessary for experiments at this standard temperature. Given that laboratories 
nowadays are not commonly heated to this high temperature anyway, it does 
appear to make sense.

Members of tropical and subtropical countries have already expressed opposition 
to the proposal, because they have to reach room temperature by cooling rather 
than heating, so for them the proposal would mean more CO2 emissions, not less.

Please express opinions to this list today, so that I have time to collate them 
before the local deadline of 28 December.


Mark J van Raaij
Dpto de Estructura de Macromoleculas, lab 20B
Centro Nacional de Biotecnologia - CSIC
calle Darwin 3
E-28049 Madrid, Spain



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Re: [ccp4bb] Combating disinformation in science and other areas

2024-02-15 Thread David J. Schuller
"Who is to be the arbiter of what is true and what is “misinformation”?


The way to uphold the integrity of science is with a free exchange of ideas, 
not an app or document that decides which publication or which interpretation 
of the data is real science and which is misinformation."


The problem with this approach is that not all participants are acting in good 
faith.

===
 All Things Serve the Beam
 ===
         David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Daniel M. 
Himmel, Ph. D. 
Sent: Wednesday, February 14, 2024 10:40 PM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: Re: [ccp4bb] Combating disinformation in science and other areas


Dear all,


That’s a very nice idea to have an app to combat misinformation that can 
undermine the integrity of science and foster mistrust of scientific inquiry.  
But to launch such an app raises the obvious question:


Who is to be the arbiter of what is true and what is “misinformation”?


The way to uphold the integrity of science is with a free exchange of ideas, 
not an app or document that decides which publication or which interpretation 
of the data is real science and which is misinformation.


Thanks go to Bryan Lepore for pointing out that the work of Herbert Marcuse (a 
strong advocate of a brand of Marxism once popular in Germany) led to much 
violence in the USA.  Violent revolutions are how a great deal of science has 
been lost during the last several thousand years of human history, which is why 
we’re first determining atomic and near-atomic resolution structures in the 
20th and 21st centuries, not eons ago.


So, my humble request:  Can we stick to crystallography and allied fields of 
structure determination on this e-mail list, and not digress into divisive 
politics, please?


Respectfully submitted,

Daniel



[https://ci3.googleusercontent.com/mail-sig/AIorK4yaaDCOito7kuxLPC8Vy7HwqDw5i6DzTzprxgG0ijHkV1cwNX6leSeq_9r7EK46_M0TzQrRM-c]

Daniel M. Himmel, Ph. D.

Principal, Himmel Sci Med Com, LLC

E-mail:  danielmhim...@gmail.com<mailto:danielmhim...@gmail.com>

URL   :  https://himmelscimedcom.com<https://himmelscimedcom.com/>



On Wed, Feb 14, 2024 at 7:52 AM Bryan Lepore 
mailto:bryanlep...@gmail.com>> wrote:
The idea of "Global Sustainability" can be found in the documents for the noted 
projects, so the United Nations "Sustainable Development Goals" appear to be 
worth reviewing as background - even though it appears the UN or UNESCO (below) 
is irrelevant to them :


“Transformation is the red thread running through all the Sustainable 
Development Goals, the United Nations’ agenda for responding to global 
challenges facing humanity and the planet. Setting our world on a more 
sustainable course requires radical shifts in current development paradigms 
that are exacerbating inequalities and imperilling [sic] our common future. 
This transition is dependent on new knowledge, research and competences that 
only higher education institutions are in a position to provide, rooted in 
their historic role of service to society.”

[...]

“In 1964, inspiring the 1968-student revolt a couple of years later, Herbert 
Marcuse wrote a key text against “one dimensional man”, urging universities and 
campuses around the world to become places that resisted reductionism. ”


Source:


Parr, et. al.

“Knowledge-driven actions: transforming higher education for global 
sustainability”

2022
UNESCO
https://doi.org/10.54675/YBTV1653



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Re: [ccp4bb] Problem running CCP4I2 in CCP4 8

2024-01-30 Thread David J. Schuller
Similar messages appear on the Known Issues page:

https://www.ccp4.ac.uk/download/doc/known_issues_linux.html

"Download 
find-missing-libs.sh<https://www.ccp4.ac.uk/download/doc/find-missing-libs.sh> 
and run it as a normal user (not root). The script will advise on what to do 
next."

===
 All Things Serve the Beam
 ===
         David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Pedro Matias 

Sent: Tuesday, January 30, 2024 9:17 AM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: Re: [ccp4bb] Problem running CCP4I2 in CCP4 8

Hi Arnaud,

I have installed Fedora 38 from scratch and reinstalled CCP4 since the
previous FC version was too old to update. I will try again after the
next reboot.

Thanks,

Pedro

On 30/01/2024 13:44, Arnaud Basle wrote:
> Hi Pedro,
>
> Can you reboot your machine and try again?
>
> I have see this error before on linux mint/ubuntu. Did you also updated
> the OS?
>
> Cheers,
> Arnaud
>
>
> On 30/01/2024 11:43, Pedro Matias wrote:
>> ⚠ External sender. Take care when opening links or attachments. Do not
>> provide your login details.
>>
>> Dear All,
>>
>> After updating CCP4 to version 8, CCP4I2 stopped working with the
>> following error message:
>>
>>> Running CCP4i2 browser from:
>>> /home/pxsoft/ccp4/ccp4-8.0/lib/python3.7/site-packages/ccp4i2
>>> Python 3.7.12 (default, Jan  6 2022, 21:30:12)
>>> [GCC 8.2.1 20180905 (Red Hat 8.2.1-3)]
>>> Qt version 5.15.2
>>>
>>> qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in
>>> "/home/pxsoft/ccp4/ccp4-8.0/QtPlugins/" even though it was found.
>>> This application failed to start because no Qt platform plugin could
>>> be initialized. Reinstalling the application may fix this problem.
>>>
>>> Available platform plugins are: eglfs, linuxfb, minimal, minimalegl,
>>> offscreen, vnc, webgl, xcb.
>>>
>>> Abort (core dumped)
>> Apparently I am missing some library/package but I have no idea of which.
>>
>> Thanks & BR,
>>
>> Pedro
>>
>> --
>> Industry and Medicine Applied Crystallography
>> Macromolecular Crystallography Unit
>> ___
>> Phones : (351-21) 446-9100 Ext. 1669
>>   (351-21) 446-9669 (direct)
>>   Fax   : (351-21) 441-1277 or 443-3644
>>
>> email : mat...@itqb.unl.pt
>>
>> https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.itqb.unl.pt%2Fresearch%2Fbiological-chemistry%2Findustry-and-medicine-applied-crystallography=05%7C02%7Cschuller%40CORNELL.EDU%7C7f66bb288389491fff2708dc219e486c%7C5d7e43661b9b45cf8e79b14b27df46e1%7C0%7C0%7C638422211033290359%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C=ncoQvCe7uIZHrS4zwOGoyNMB5JCLrh78opYomjQzGqs%3D=0<http://www.itqb.unl.pt/research/biological-chemistry/industry-and-medicine-applied-crystallography>
>>
>> https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.itqb.unl.pt%2Flabs%2Fmacromolecular-crystallography-unit=05%7C02%7Cschuller%40CORNELL.EDU%7C7f66bb288389491fff2708dc219e486c%7C5d7e43661b9b45cf8e79b14b27df46e1%7C0%7C0%7C638422211033298109%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C=POb5gNKM12eJP6YY6Noq4zQpGRs4CkKkUzmzZYOcMMg%3D=0<http://www.itqb.unl.pt/labs/macromolecular-crystallography-unit>
>>
>>
>> Mailing address :
>> Instituto de Tecnologia Quimica e Biologica António Xavier
>> Universidade Nova de Lisboa
>> Av. da República
>> 2780-157 Oeiras
>> PORTUGAL
>>
>> ITQB NOVA, a great choice for your PhD
>> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fyoutu.be%2Fde6j-aaTWNQ=05%7C02%7Cschuller%40CORNELL.EDU%7C7f66bb288389491fff2708dc219e486c%7C5d7e43661b9b45cf8e79b14b27df46e1%7C0%7C0%7C638422211033303516%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C=IICjRQeYwqHmUqOtvC5V0q8COepe0G9Fs%2BWQ4oxCVKg%3D=0<https://youtu.be/de6j-aaTWNQ>
>>
>>
>> Master Programme in Biochemistry for Health
>> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fyoutu.be%2FUKstDCFjYI8=05%7C02%7Cschuller%40CORNELL.EDU%7C7f66bb288389491fff2708dc219e486c%7C5d7e43661b9b45cf8e79b14b27df46e1%7C0%

Re: [ccp4bb] Problems updating CCP4 via CCP4i

2024-01-30 Thread David J. Schuller
What is your operating system?

I have encountered a problem on Scientific Linux 7 where ccp4um will not run 
correctly unless I clear out LD_LIBRARY_PATH first. This apparently happens 
because ccp4um requires certain libraries that ship with CCP4, and if the 
system libraries, which are a different version, appear in LD_LIBRARY_PATH 
ahead of the CCP4 libraries, trouble ensues.

It is possible to put the CCP4 libraries at the start of LD_LIBRARY_PATH, but 
then that screws up every other program.

csh/tcsh: unsetenv LD_LIBRARYPATH
sh/bash: unset LD_LIBRARY_PATH

===
 All Things Serve the Beam
 ===
 David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Pedro Matias 

Sent: Tuesday, January 30, 2024 6:40 AM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: [ccp4bb] Problems updating CCP4 via CCP4i


Dear All,

I am no longer able to update CCP4 via CCP4i

[cid:part1.PIYkI0WM.u8Wjf4uA@itqb.unl.pt]

When I click on "Proceed" Instead of opening the update window, I get back to 
exactly this view. Is it possible to update CCP4 via the command line?

I haven't tried using CCP4I2 because it doesn't work on my PC (separate e-mail).

Thanks & BR,

Pedro

--
Industry and Medicine Applied Crystallography
Macromolecular Crystallography Unit
___
Phones : (351-21) 446-9100 Ext. 1669
 (351-21) 446-9669 (direct)
 Fax   : (351-21) 441-1277 or 443-3644

email : mat...@itqb.unl.pt<mailto:mat...@itqb.unl.pt>

http://www.itqb.unl.pt/research/biological-chemistry/industry-and-medicine-applied-crystallography
http://www.itqb.unl.pt/labs/macromolecular-crystallography-unit

Mailing address :
Instituto de Tecnologia Quimica e Biologica António Xavier
Universidade Nova de Lisboa
Av. da República
2780-157 Oeiras
PORTUGAL

ITQB NOVA, a great choice for your PhD
https://youtu.be/de6j-aaTWNQ

Master Programme in Biochemistry for Health
https://youtu.be/UKstDCFjYI8



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Re: [ccp4bb] Fragile Crystals

2023-11-22 Thread David J. Schuller
There are multiple avenues you could explore.

If you think handling is an issue, you could look into growing and collecting 
with "in situ"  plates.

You could test for diffraction at room temp, or even get a full data set at 
room temp by combining data from multiple crystals. If diffraction is not good 
at room temp, it is probably not going to be better under cryo conditions.

As for cryo, instead of trying cryoprotectant A or cryoprotectant B, you could 
try a mixture of multiple cryoprotectants:

https://pubs.acs.org/doi/abs/10.1021/acs.cgd.5b01692
Use of Multiple Cryoprotectants to Improve Diffraction Quality from Protein 
Crystals
Senda, et al.
https://doi.org/10.1021/acs.cgd.5b01692

Evidence of Kinetic Cooperativity in Dimeric Ketopantoate Reductase from 
Staphylococcus aureus
JE Sanchez, PG Gross, RW Goetze, RM Walsh Jr, WB Peeples, ZA Wood
Biochemistry 54 (21), 3360-3369

===
 All Things Serve the Beam
 ===
         David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Blake, Morgan 
Elizabeth 
Sent: Wednesday, November 22, 2023 11:44 AM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: [ccp4bb] Fragile Crystals

Hello!

I am a PhD student working on a crystallography project to wrap up my 
dissertation research. I have purified a complex of two proteins, and I can 
consistently grow crystals in 10% PEG3350, 0.2M KSCN, 0.1M BIS-TRIS propane pH 
7.5. These crystals have sharp edges and can grow to a large size (greater than 
0.5 mm), but the crystals seem to be very fragile. When we open the drops to 
harvest the crystals, we have little time to harvest the crystals before they 
crack. When we move the crystals to a cryoprotectant, over time they start 
fracturing. We've tried using different percentages of glycerol, ethylene 
glycol, PEG400, and oil for cryoprotectants with no success. Needless to say, 
the crystals do not diffract well, with spot patterns that look very 
streaky/mosaic, which I presume is due to the defects that we see in 
harvesting/handling. We have screened for alternate crystallization conditions, 
but we seem to get the same morphology in other conditions. Does anyone have 
suggestions for additives we could use post-crystallization to help stabilize 
our crystals?

Thanks for your advice!



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Re: [ccp4bb] Dry shipper in limbo

2023-07-28 Thread David J. Schuller
FedEx missing deadlines on "overnight" shipments is not uncommon, I advise 
everyone to ship dewars to arrive at least one extra day in advance.

Also, their online tracking page could be better. They show the original 
expected delivery time even if the shipment has already missed an intermediate 
transfer point. The delivery time does not get updated until the original 
delivery time has been passed.

The multiple lost days and the international complication are unusual details 
and I don't have any specific advice on that.

===
 All Things Serve the Beam
 ===
         David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Savvas Savvides 
<9d24f7f13e09-dmarc-requ...@jiscmail.ac.uk>
Sent: Friday, July 28, 2023 3:56 AM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: Re: [ccp4bb] Dry shipper in limbo

Dear Kevin,

A similar incident from just two weeks ago, in Europe in our case, was resolved 
by travelling to the regional FedEx package collection/distribution center to 
recover the dry-shipper in person. This involved gaining access to the FedEx 
center and talking to the right people.

I would absolutely not wait this out because your shipment is probably 
somewhere in the corner of a distribution center used as a seat by employees 
taking a break. I can attest to the fact that they do have such corners where 
“problematic" shipments are piled up!

Despite what you were told on the phone or could deduce from any online 
tracking systems (in our case the dry-shipper was not even trackable), there is 
still a (very good) chance that your shipment might still be at a regional 
collection/distribution center.

The key is to get to any information about where this place might be, talk to 
the local people, and find out what the actual route of the shipment might have 
been after getting picked up from your lab. The routes often involve 
intermediate collection/distribution sites.

To their credit, and in contrast to the general FedEx customer service, the 
people at the regional FedEx distribution center (including the shift manager) 
were very empathic and helpful, and used means that go above and beyond SOPs to 
help. This included sharing photos of the shipment via WhatsApp with 
drivers/employees of the three previous shifts etc… Despite the volumes of work 
they handle, drivers and other courier employees actually do remember unusually 
looking shipments, such as a shipping-case containing a dry-shipper!

Best of luck and wishes,
Savvas




On 28 Jul 2023, at 08:15, Savvas Savvides  wrote:



Best wishes,
Savvas

Begin forwarded message:

From: "Dr. Kevin M Jude" mailto:kj...@stanford.edu>>
Date: 28 July 2023 at 05:16:39 CEST
To: CCP4BB@jiscmail.ac.uk<mailto:CCP4BB@jiscmail.ac.uk>
Subject: [ccp4bb] Dry shipper in limbo
Reply-To: "Dr. Kevin M Jude" mailto:kj...@stanford.edu>>


My first adventure in international crystallography is off to an inauspicious 
start. On Monday, I sent a dry shipper “overnight” from California to 
Saskatchewan, but it has been stuck in the Memphis FedEx facility for a few 
days. I’ve gotten several conflicting explanations of the status from FedEx on 
the phone, but the most likely seems that it has “pre-cleared” customs and yet 
has not yet made it to Calgary. It’s not clear whether anyone actually knows 
where the shipping case is, since I was asked to give a physical description of 
it. Is there anything else I can do from a few thousand miles away, or do I 
just have to wait this out?

--
Kevin Jude, PhD
Structural Biology Research Specialist, Garcia Lab
Howard Hughes Medical Institute
Stanford University School of Medicine
Beckman B177, 279 Campus Drive, Stanford CA 94305
Phone: (650) 723-6431



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Re: [ccp4bb] Error in xdsgui: you have to install generate_XDS.INP in your path

2023-06-05 Thread David J. Schuller
I am not familiar with Macs, but on Linux the first problem could be easily 
solved by having the desktop shortcut call a brief shell script rather than the 
executable. The script would first set up the environment properly, then call 
the executable.


===
 All Things Serve the Beam
 ===
 David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Kay Diederichs 

Sent: Sunday, June 4, 2023 8:43 AM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: Re: [ccp4bb] Error in xdsgui: you have to install generate_XDS.INP in 
your path

Dear Zhen Gong,

Installation of XDS and associated programs is documented in the "Installation" 
article in XDSwiki.
If I google "XDSwiki installation article", it is the first hit.

Your PATH is probably different when you double-click XDSGUI to start it, 
compared to what it is on the command line.
So don 't double-click it! Start XDSGUI from the command line - this way you 
also see error messages from generate_XDS.INP, and output of POINTLESS and Coot.
Use the latest versions of the programs.

Concerning HDF5 processing, read the Installation article.
As Graeme said, you need a library, and you need to tell XDS where it is, with 
a LIB= line in XDS.INP .
There are different library versions for Intel Mac and Silicon Mac.
if you have a Silicon Mac, I recommend to use the specific Silicon Mac versions 
of XDS, XDSGUI and the library.

Hope this helps,
Kay

On Sat, 3 Jun 2023 18:24:24 +0100, Zhen Gong  wrote:

>Dear all,
>
>I have encountered this problem in xdsgui: you have to install 
>generate_XDS.INP in your path. Generate_XDS.INP works fine in command line but 
>not in the GUI. I saw the same question was raised up by another user 
>previously on CCP4bb but I was not able to see Key's reply any more.
>
>Thank you very much for your help!
>
>Best regards,
>Zhen
>
>
>
>To unsubscribe from the CCP4BB list, click the following link:
>https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB=1
>
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Re: [ccp4bb] Unknown electron density

2023-04-19 Thread David J. Schuller
Anomalous data might have been helpful. Zinc has an edge at 1.2837 A.


===
 All Things Serve the Beam
 ===
 David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Betty Chu 

Sent: Wednesday, April 19, 2023 12:58 PM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: [ccp4bb] Unknown electron density

Dear CCP4BB,

I am working on a structure refinement and came across a blob of density that 
looks like an anvil (see link). Has anyone seen this before and have an idea of 
what it is?


https://drive.google.com/file/d/1BGNwV3MujYjrV4W5m1bh3_WWd49RhJ1w/view?usp=sharing

The protein is in potassium phosphate and the components in the 
crystallization/cryo condition are zinc acetate, PEG, and glycerol.

Thank you in advance for your time and help!

Betty



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[ccp4bb] Another folding AI

2022-11-03 Thread David J. Schuller
https://www.biorxiv.org/content/10.1101/2022.07.20.500902v2

Evolutionary-scale prediction of atomic level protein structure with a language 
model<https://www.biorxiv.org/content/10.1101/2022.07.20.500902v2>
doi: https://doi.org/10.1101/2022.07.20.500902

Abstract

Artificial intelligence has the potential to open insight into the structure of 
proteins at the scale of evolution. It has only recently been possible to 
extend protein structure prediction to two hundred million cataloged proteins. 
Characterizing the structures of the exponentially growing billions of protein 
sequences revealed by large scale gene sequencing experiments would necessitate 
a breakthrough in the speed of folding. Here we show that direct inference of 
structure from primary sequence using a large language model enables an order 
of magnitude speed-up in high resolution structure prediction. Leveraging the 
insight that language models learn evolutionary patterns across millions of 
sequences, we train models up to 15B parameters, the largest language model of 
proteins to date. As the language models are scaled they learn information that 
enables prediction of the three-dimensional structure of a protein at the 
resolution of individual atoms. This results in prediction that is up to 60x 
faster than state-of-the-art while maintaining resolution and accuracy. 
Building on this, we present the ESM Metagenomic Atlas. This is the first 
large-scale structural characterization of metagenomic proteins, with more than 
617 million structures. The atlas reveals more than 225 million high confidence 
predictions, including millions whose structures are novel in comparison with 
experimentally determined structures, giving an unprecedented view into the 
vast breadth and diversity of the structures of some of the least understood 
proteins on earth.

Competing Interest Statement

The authors have declared no competing interest.


===
 All Things Serve the Beam
 ===
     David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu



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[ccp4bb] Jenkins?

2022-09-25 Thread David J. Schuller
CCP4 8.0.004
Scientific Linux 7, kernel 3.10.0-1160.76.1.el7.x86_64
mate-desktop-1.16.2-1.el7.x86_64

This morning I updated my Nvidia graphics driver, then rebooted. When I logged 
in again, my desktop (Mate) was all messed up, no applications menus, etc. I 
perused the log files and found many lines similar to these in 
/var/log/messages:

Sep 25 09:45:32 titan mate-session[1718]: WARNING: Could not connect to 
Systemd: Failed to connect to socket 
/home/jenkins/workspace/CCP4/series-8.0-linux/devtools/install/var/run/dbus/system_bus_socket:
 No such file or directorySep 25 09:45:34 titan journal: Error connecting to 
system bus: Failed to connect to socket 
/home/jenkins/workspace/CCP4/series-8.0-linux/devtools/install/var/run/dbus/system_bus_socket:
 No such file or directory
Sep 25 10:12:35 titan pulseaudio[22894]: [alsa-sink-ALC887-VD Analog] 
core-util.c: Failed to connect to system bus: Failed to connect to socket 
/home/jenkins/workspace/CCP4/series-8.0-linux/devtools/install/var/run/dbus/system_bus_socket:
 No such file or directory
Sep 25 10:12:40 titan pulseaudio[23162]: [pulseaudio] core-util.c: Failed to 
connect to system bus: Failed to connect to socket 
/home/jenkins/workspace/CCP4/series-8.0-linux/devtools/install/var/run/dbus/system_bus_socket:
 No such file or directory
Sep 25 10:12:40 titan pulseaudio[23162]: [pulseaudio] core-util.c: Failed to 
connect to system bus: Failed to connect to socket 
/home/jenkins/workspace/CCP4/series-8.0-linux/devtools/install/var/run/dbus/system_bus_socket:
 No such file or directory

I do not have, and have never had, a user "jenkins" on my system. Note that the 
CCP4 workspace is implicated.

I took the CCP4 startup stuff out of my .cshrc login script and restarted, and 
everything appeared to be normal.
# source  /usr/local/xtal/ccp4/bin/ccp4.setup-csh  >& /dev/null

Why is jenkins mucking about with  my desktop settings, and how do I keep him 
from doing so?


===
 All Things Serve the Beam
 ===
     David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu



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Re: [ccp4bb] PDBx-format utilities

2022-09-08 Thread David J. Schuller
I have a set of utilities for handling PDB files, known as "PDB Pipeline". Each 
one does a single distinct thing: manipulate the spatial coordinates, reset the 
B, pull out a particular subset of residue numbers, fix particular known 
problems, etc. There are several dozen. They work very nicely with Linux 
command line utilities such as grep and sed. They are so old that they were 
written in Fortran-77 (with VMS FORTRAN extensions).


===
 All Things Serve the Beam
 ===
         David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Paul Emsley 

Sent: Thursday, September 8, 2022 3:28 PM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: [ccp4bb] PDBx-format utilities

A spectre is haunting structural biology - it is the spectre of the PDBx
format.

We at CCP4 are interested in providing tools that are equivalents of
those that one might have trivially made with utilities such as grep or sed.

For example:

 delete the hydrogen atoms

 extract the hydrogen atoms

 extract the SD of MET

 find the atoms with B-factors greater than 100.0


So, what useful tool have you made can that works because it based on
the PDB format - that (of course) doesn't work with PDBx?


Thanks,

Paul.



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Re: [ccp4bb] Checking X-ray sequence (no more protein).

2022-07-29 Thread David J. Schuller
I don't know how much effort I would put into that, given how easy nucleic acid 
sequencing has become.

===
 All Things Serve the Beam
 ===
 David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Robbie Joosten 

Sent: Friday, July 29, 2022 9:56 AM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: Re: [ccp4bb] Checking X-ray sequence (no more protein).

Hi Jon,

There are placeholders for ASP/ASN and GLU/GLN ambiguities: ASX and GLX 
respectively. You can just use those. AFAICT there no such thing for VAL/THR 
ambiguities. You could look for the most likely canadidata based on multiple 
sequence alignments. Refinement of both alternatives can give hints in 
B-factors and if you are lucky in difference density. But if hydrogen bonding 
gives no hints, then the residues are also not in a place where the identity 
really matters. You can give your best guess with a CAVEAT record or use the 
name UNK to indicate that you do not know what the residue is. You would loose 
the knowledge that it is either VAL or THR in that case.

Cheers,
Robbie

> -Original Message-
> From: CCP4 bulletin board  On Behalf Of Jon
> Cooper
> Sent: Friday, July 29, 2022 12:14
> To: CCP4BB@JISCMAIL.AC.UK
> Subject: [ccp4bb] Checking X-ray sequence (no more protein).
>
> Hello, I am looking for suggestions of ways to check a 1.7 Angstrom X-ray
> sequence for a protein where it is impractical to do experimental sequencing,
> protein or DNA. The structure refines to publishable R/R-free and the main
> ambiguities seem to be Thr/Val, Asp/Asn and Glu/Gln where alternative H-
> bonding networks are possible. Running alpha-fold seems an interesting
> option? Any suggestions much appreciated.
>
> Cheers, Jon.C.
>
> Sent from ProtonMail mobile
>
>
>
>
> 
>
>
> To unsubscribe from the CCP4BB list, click the following link:
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Re: [ccp4bb] ligand binds to one molecule

2022-03-06 Thread David J. Schuller
I think it would be a mistake to generalize.
I have seen a situation in which 1 of 4 sites was occupied, the ligand was not 
included in the crystallization solution(which means it must have been bound 
beforehand) and the site participated in crystal contacts. I do not doubt that 
examples of the opposite causality exist. And the data I used to make my 
conclusions in my own example came from outside the structure itself.

===
 All Things Serve the Beam
 ===
 David J. Schuller
 modern man in a post-modern world
 MacCHESS, Cornell University
 schul...@cornell.edu

From: CCP4 bulletin board  on behalf of Palm, Gottfried 

Sent: Sunday, March 6, 2022 4:10 AM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: Re: [ccp4bb] ligand binds to one molecule

Dear all,
  I don't think, there is much to add to the statement of Bernhard or James 
that different protomers in the asymmetric unit (must) have some difference in 
there contacts and therefore often in their conformation. What it doesn't 
answer is a chicken or the egg question:
do the different environments in the crystal allow or force different 
conformations (e.g. open or closed loops) and/or different (active) site 
occupancies or
do different states in an oligomer allow or force crystallization only in a 
packing and space group with multiple states?
Latter could be due to an anti-cooperative binding to a dimer. We have seen 
this in the dimeric Tet repressor: wt binds the ligand (a tetracycline) in each 
monomer of the dimer with one chain in the asymmetric unit, but some of the 
mutants bind only one ligand per dimer (confirmed by ITC, Biochimica et 
Biophysica Acta, 2020). Despite the same packing, this forces reduction of 
space group symmetry from I422 to P422 (omitting screws).
>From the crystal structures alone, I think, one cannot prove what comes first. 
>From my gut feeling, in most cases multiple states in solution force multiple 
>states in the crystal - in other words - I tend to say, multiple states in the 
>crystal are "real" in the sense they also occur in solution. Does somebody 
>want to comment on this?
Greetings
  Gottfried


Am Sonntag, den 06-03-2022 um 00:40 schrieb Bernhard Rupp:
As you stated, you have multiple protomers in the asymmetric unit, where they 
are free from
crystallographic symmetry constraints. Generally that means different local 
environment for
each protomer. Inspecting the sites in the different protomers (frequently 
related by various
non-crystallographic symmetry operations) often can reveal plausible reasons
for different occupancies. One hydrogen bond more or less for example can mean a
difference of 4 orders of magnitude in Kd.

Best, BR

-Original Message-
From: CCP4 bulletin board  On Behalf Of 
Sent: Saturday, March 5, 2022 12:01
To: CCP4BB@JISCMAIL.AC.UK<mailto:CCP4BB@JISCMAIL.AC.UK>
Subject: [ccp4bb] ligand binds to one molecule

Hello all,

In homo-dimeric or homo-oligomeric protein crystal structures, what would be 
the reason for having a ligand (chemical compound or fragment) binds to one 
molecule and not all molecules in the asymmetric unit?

I have soaked a fragment that has an affinity of 200 uM to a viral protein but 
I can only see it binds to one molecule (we have eight molecules in the AU). 
This is was also notable as well in some published PDB (dimeric protein).

Any suggestions?

Best wishes,
Shymaa



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[ccp4bb] ccp4um log

2022-01-03 Thread David J. Schuller
Does ccp4um write a log file?
Where does it go?
Does it include everything that appears in the graphical window while the 
update is running?

During an update, I noticed lines saying that something cannot be done, but 
they flew by too fast for me to inspect.


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Re: [ccp4bb] nVidia 3D Vision2 glasses

2020-01-14 Thread David J. Schuller
Which Linux and which desktop?

Attached find a typical functional /etc/X11/xorg.conf file for stereo use from 
a Scientific Linux 7 machine.
The two notable things about this file:
"STEREO" is enabled in the "Screen" section.
"COMPOSITE" is disabled in the "Extensions" section.

With some newer desktops such as Gnome 3 it is not possible to disable 
composite. Try using the XFCE or Mate desktop.



On 2020-01-14 15:43, Oganesyan, Vaheh wrote:
Colleagues,
While on stereo issues here is problem I’m trying to resolve with community 
help:
my hardware includes nVidia quadro FX1400, Xpand emiter and NewVision glasses. 
Driver taken from nVIDIA site specifically for Quadro FX 1400, long lived. On 
old Linux station these worked together fine for PyMOL and O. On newer machine 
PyMOL doesn’t complain but doesn’t show stereo either. “O” complains:


freeglut (/home/Vaheh/o/bin/170211_lin64_ono): ERROR: Internal error  in function fgOpenWindow

and quits.

Will appreciate help on resolving this issue.


Regards,

Vaheh Oganesyan, Ph.D.
Scientist, Biologic Therapeutics

AstraZeneca
R | Antibody Discovery and Protein Engineering
One Medimmune Way, Gaithersburg, MD 20878
T:  301-398-5851
vaheh.oganes...@astrazeneca.com<mailto:oganesy...@medimmune.com>




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# /etc/X11/nvidia-xorg.conf provided by http://elrepo.org

Section "Device"
Identifier  "Videocard0"
Driver  "nvidia"
EndSection
Section "Monitor"
Identifier   "Monitor0"
VendorName   "Planar"
ModelName"SA2311W"
HorizSync30.0 - 140.0
VertRefresh  56.0 - 120.0
Option  "DPMS"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor"Monitor0"
DefaultDepth 24
Option "Stereo" "10"
SubSection "Display"
Modes  "1920x1080" "1920x1080_120"
Depth 24
EndSubSection
EndSection

Section "Extensions"
Option "COMPOSITE" "Disable"
EndSection




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[ccp4bb] Dead link

2019-12-18 Thread David J. Schuller
On this CCP4 documentation page:

http://www.ccp4.ac.uk/html/phaser.html

The link for "Full documentation" goes nowhere.


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Re: [ccp4bb] RAID array

2019-11-27 Thread David J. Schuller
I agree about the complexity of the RAID situation. But it can be narrowed down 
a bit.

Since the claim is made there were only two hard drives, the only possibilities 
are:
RAID 0 - "striping". In which case his data will probably not be recoverable, 
and he would be unable to boot.
RAID 1 - "mirroring". In which case the data may be recoverable. This is 
probably the case, since from the description the machine is booting but the 
login process is unsuccessful.

If the RAID is set up with hardware, there may be entry into the controller 
from the BIOS boot process.

If the RAID is set up in Linux software, then you need to get logged in somehow 
with root privileges. Details may vary a bit depending on which Linux 
distribution is involved (which was not mentioned).

You could try to boot into "rescue mode" from the Linux installation media (DVD 
or USB stick, usually). Or you could try to boot into "single user mode" by 
altering the boot command during the boot procedure (details will vary with 
distribution). Or you could try setting to boot up in nongraphical mode.

Like I say, this varies with Linux distribution so I won't try to give a line 
by line set of instructions. My experience is all with Fedor and Scientific 
Linux.

Once you are in, you need to assess the situation. If RAID is set up with 
software, there will be a configuration file, typically /etc/mdadm.conf, and a 
status file, typically /proc/mdstat. You can look for these files for clues to 
how the RAID is set up, and what its status is.
You would need to figure out how your existing drive is configured by checking 
out the partition arrangement with /usr/sbin/fdisk or /usr/sbin/parted.
Then you would need to set up partitions on the brand new drive in the same way.
Once the partitions exist, you would try to add the partitions into the RAID 
volume with /usr/sbin/mdadm. You are going to need to read the man pages for 
mdadm and probably search for help online. Once the RAID set is successfully 
reconfigured, it would take probably a few hours to copy the data from the good 
device to the new one.

BTW, if anyone is using HPE SSDs they need to be aware of this:
https://www.zdnet.com/article/hpe-tells-users-to-patch-ssds-to-prevent-failure-after-32768-hours-of-operation/
HPE tells users to patch SSDs to prevent failure after 32,768 hours of operation



On 2019-11-27 09:03, Kay Diederichs wrote:

Hi Vaheh,

RAID on Linux comes in different flavours and levels; the flavours are software 
RAID (mdadm) and hardware RAID (dedicated RAID controller or motherboard), and 
the levels are RAID0 RAID1 RAID5 RAID6 RAID10 and a few others. These details 
influence what the user will notice when a disk goes bad. Without knowing what 
you have, it is difficult to help.

As an example, by default in my lab we have the operating system on mdadm RAID1 
which consists of two disks that mirror each other. If one of the disks fails, 
typically we only notice this when inspecting the system log files. Replacing 
the disk, and re-silvering the RAID1 is not trivial and requires some reading 
of material on the web.

It sounds like you don't have this type of RAID1, or maybe there is some 
mis-configuration.

good luck,
Kay



On Tue, 26 Nov 2019 21:05:54 +, Oganesyan, Vaheh 
<mailto:vaheh.oganes...@astrazeneca.com> wrote:



Hello ccp4-ers,

A bit off topic (actually a lot off topic) question regarding RAID array 
system. On linux box one of two hard drives failed. I've found identical one 
and replaced it. Can someone point me in the direction where I can get 
instructions on what to do next to be able to login? Currently computer starts 
with no error messages, comes to the login window, takes username and password 
from me and then flashes and comes back to login window.

Thank you for your help.
Regards,

Vaheh Oganesyan, Ph.D.
Scientist, Biologic Therapeutics

AstraZeneca
R | Antibody Discovery and Protein Engineering
One Medimmune Way, Gaithersburg, MD 20878
T:  301-398-5851
vaheh.oganes...@astrazeneca.com<mailto:vaheh.oganes...@astrazeneca.com><mailto:oganesy...@medimmune.com><mailto:oganesy...@medimmune.com>





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--
===
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========

Re: [ccp4bb] difficult molecular replacement solution

2019-11-13 Thread David J. Schuller
Have you looked at a self-rotation function? Those can sometimes be very useful 
in deciphering multiplicity.


On 2019-11-13 09:33, Robert S Phillips wrote:
I have been working on a protein structure which has been hard to solve by 
molecular replacement.

Unit cell: (60.6, 172.34, 196.42, 90, 90, 90)
Space group: P 21 21 21

The problem is that the homologues have only ~20% identity, and there are 
multiple chains in the asymmetric unit.  The question is how many.  It could be 
4, 5, or 6 chains.

N  solvent   P
 4  0.602   3.090.225
 5  0.502   2.470.388
 6  0.403   2.060.229

I have run PHASER with 4, 5 and 6 chains.  I allowed it to search all possible 
space groups, and P212121 was the best solution.  These are the results.

N  LLG   TFZ
4  104.97.5
5  137.57.7
6  166.28.3

 Am I correct to conclude that there are 6 chains in the asymmetric unit?

Rob

Robert S. Phillips
Professor of Chemistry and of Biochemistry and Molecular Biology
University of Georgia
Athens, GA 30602
Phone: (706) 542-1996
Fax: (706) 542-9454
E-mail: rsphill...@chem.uga.edu<mailto:rsphill...@chem.uga.edu>
Web:  
http://tryptophan.net<https://pod51004.outlook.com/owa/redir.aspx?C=ccbf42ffea5f48b1bf8e9bb950454bab=http%3a%2f%2ftryptophan.net>



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[ccp4bb] Chiral

2019-11-07 Thread David J. Schuller
This would seem to be of interest as we all value chiral crystals.


---

https://www.polygon.com/death-stranding-guide/2019/11/7/20948653/chiral-crystals-bts-farm-fight-collect-hermetic-grenades-standard-ammo

Death Stranding guide: Fighting BTs to farm chiral crystals

Take on BTs to collect thousands of chiral crystals

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[ccp4bb] Health study relevant to molecular modeling

2010-02-23 Thread David J. Schuller
http://www1.voanews.com/english/news/health/Research-Shows-3-D-Movies-Can-Cause-Eye-Strain-Headaches-84909757.html


Research Shows 3-D Movies, TV Can Cause Eye Strain, Headaches
Vidushi Sinha | Washington 
21 February 2010

Three dimensional movies, like Avatar, are wowing us with their visual
display. ... But a study at the University of California Berkeley found
that 3-D movies can cause eye strain.
...
Banks says younger viewers are more vulnerable.

When you hit your 50s and 60s, we think that concern is going to be
reduced, noted Banks.  So that is probably more problematic for young
adults, teenagers, et cetera. 
...



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===
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   schul...@cornell.edu


Re: [ccp4bb] anomalous difference fourier maps

2010-02-19 Thread David J. Schuller
On Fri, 2010-02-19 at 10:37 -0500, Edward A. Berry wrote:
 The problem is not that the phenix team was so quick
 to promote their software, but rather that now 14 hours after the
 original
 post, no one has answered the CCP4 question. 

The original poster returned to indicate that he had received multiple
responses. I gather that he received them off-board.

-- 
===
All Things Serve the Beam
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


Re: [ccp4bb] unknown density

2010-02-03 Thread David J. Schuller
On Wed, 2010-02-03 at 18:26 +0100, Mark J. van Raaij wrote:
 as it appears to bear near the guanidine group of an arginine, I would  
 suggest it is a partially occupied and disordered sulphate and/or  
 phosphate.

If it's a sulphate, a look at the anomalous map should show something.

-- 
===
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===
   David J. Schuller
   modern man in a post-modern world
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   schul...@cornell.edu


[ccp4bb] 2010 Stereoscopic 3D Hardware Guide

2010-01-29 Thread David J. Schuller
This explains the various 3D technologies available


http://www.mtbs3d.com/cgi-bin/newsletter.cgi?news_id=93

2010 Stereoscopic 3D Hardware Guide
By Neil Schneider
January 28, 2010 

-- 
===
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===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


Re: [ccp4bb] question on the effect of a fire alarm on crystallization

2010-01-22 Thread David J. Schuller
If your crystals exploded, the alarm would provide warning to other
residents of the building.
-- 
===
All Things Serve the Beam
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu



On Fri, 2010-01-22 at 09:13 -0500, Jacqueline Vitali wrote:
 Dear all,
  
 Does anyone know the effect of a fire alarm placed in the same room
 where one grows crystals?
  
 (1) On trays placed inside styrofoam boxes
  
 (2) On trays placed inside an incubator which has not been tested as
 vibration free.
  
 Thank you.
  
 Jackie Vitali


Re: [ccp4bb] Stereo worked, but can't log back on after the screen lock Re: [ccp4bb] [COOT] 120hz LCDs and coot stereo

2010-01-19 Thread David J. Schuller
I don't recall which version of Linux you are using, but I have seen
similar problems under some versions of Fedora, including F12, with some
graphics drivers (but not specifically the nVidia proprietary driver).
Some obvious solutions include: 

1) setting the Power Management not to power down the display ever
2) setting the screensaver not to lock
3) setting the screensaver not to activate

The first one is especially worth a try.

-- 
===
All Things Serve the Beam
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu



On Tue, 2010-01-19 at 07:05 -0500, Zheng Zhou wrote:
 Dear all
 
 Thanks for your input. With your help, I just installed the stereo on
 linux with two monitors using the clone mode. The coot and pymol
 stereo work beautifully.
 
 But I met some problem, every time I walked away from my computer to
 do some real work, the screensaver would be activated and I couldn't
 log back on. So I lost some part of my work. The virtual console
 Ctrl+Alt+F1~F6 worked.
 
 I tried to use kernel-devel to build the nvidia driver both the
 certified 190 version and the beta version 195.22 and 195.30. But none
 of these versions could correct the error. When I allowed the
 certified 190 driver to write the xorg.conf file, it worked. I googled
 it, but didn't find any answer.
 
 Has anyone encountered the similar problem? Thanks for your help in advance.
 Joe


Re: [ccp4bb] 3D monitors

2010-01-15 Thread David J. Schuller
On Fri, 2010-01-15 at 09:11 +0100, alexander.schif...@sanofi-aventis.com
wrote:
 We had a demo of the ViewSonic FuHzion VX2265wm and Nvidia 3D Vision
 system yesterday.

The VX2265wm is a 1680x1050 monitor. Reviews from last year generally
pegged it as inferior to the Samsung 2233RZ, another 1680x1050 monitor.

Soon a crop of 23.5 1920x1080 120 Hz LCD monitors compatible with
active glasses (nVidia 3D vision) will appear on the market.

The ViewSonic V3D241wm-LED has been announced as available in April.

The Acer GD235HZ and GD245HW were anounced a month ago for january
availability, but I haven't seen any for sale yet. These are the only
1920x1080 monitors listed on nVidia's

Alienware (Dell) OptX AW2310 - available now?

LG W2363D - no date on availability, but since LG is manufacturing the
panels which will be used in all of these products, I presume they won't
be last to market.

I am guessing other manufacturers will follow suit, but I haven't seen
anything from Samsung yet.

Cheers,

-- 
===
All Things Serve the Beam
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


Re: [ccp4bb] Stereo TFT

2010-01-15 Thread David J. Schuller
On Fri, 2010-01-15 at 11:17 -0500, Yong Y Wang wrote:
 Alexander,
 
 I thought FX3700 would work.  Good to hear confirmation from you.  It 
 would be nice a Linux driver is available to allow USB based stereo sync. 
 No, not any Quadro card with stereo output will work.  The old FX1400 does 
 not work.  Even the relatively new FX3500 does not work.  The nVidia 
 website has a list of cards that support 3D Vision.  That should be 
 consulted before purchasing even though the list was created for Windows.

Here is nVidia's list

http://www.nvidia.com/object/quadro_pro_graphics_boards.html

This details which cards are supported for 3D vision and which have a 3 pin 
mini-DIN
stereo connector.
That page says cards without the connector can be used via USB, but I am not 
sure
if that applies to Linux or just to Windows.

FX1400 and FX3500 not working - are you just saying that because they do not
appear on the list, or have you personally verified it? Those happen to be the
cards I currently have.

The FX3800 card can use a mini-DIN stereo plug on a separate PCI blank, which
is sold separately. See for example:
http://www.bhphotovideo.com/c/product/652465-REG/PNY_Technologies_900_50762__000_QUADRO_FX_3800_STEREO.html
PNY Technologies Stereo Bracket for Quadro FX 3800

Someone posted a link for the release notes of the 195.30 beta driver last week.
I can't find the link right now, but I believe it said that to be supported
for 3D vision, the card has to be G82XL or newer. The Core designations for
Quadro cards can be found at Wikipedia:
http://en.wikipedia.org/wiki/Nvidia_Quadro


-- 
===
All Things Serve the Beam
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


[ccp4bb] Intel compiler in the news

2010-01-04 Thread David J. Schuller
This might be of interest to the scientific computing community:

http://www.osnews.com/story/22683/Intel_Forced_to_Remove_Cripple_AMD_Function_from_Compiler_

Intel Forced to Remove Cripple AMD Function from Compiler?


posted by Thom Holwerda on Sun 3rd Jan 2010 20:32 UTC 
Icon


Here's something you probably don't know, but really should - especially
if you're a programmer, and especially especially if you're using
Intel's compiler. It's a fact that's not widely known, but Intel's
compiler deliberately and knowingly cripples performance for non-Intel
(AMD/VIA) processors.
...



-- 
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


Re: [ccp4bb] [COOT] 120hz LCDs and coot stereo

2009-12-18 Thread David J. Schuller
On Thu, 2009-12-17 at 18:25 -0500, Ajit Datta wrote:
 I just talked to the NVIDIA pre-sales people and they told me that this 
 driver (195.22 beta) should work with 120Hz lcd monitors together with Nvidia 
 3D vision kit on a quadro graphics card.
 
 Ajit B. 

http://www.phoronix.com/scan.php?page=news_itempx=NzczOQ

NVIDIA Pushes Out 195.22 Beta Linux Driver
...
Other changes include...
support for NVIDIA 3D Vision Stereo on Linux with Quadro GPUs...



-- 
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


Re: [ccp4bb] [COOT] 120hz LCDs and coot stereo

2009-12-17 Thread David J. Schuller
My current understanding is that

1) The new 120Hz LCD monitors are not compatible with the old goggles.
Something about the type of polarization used for the shuttering effect.
So if you were going to try out one of the new 120Hz monitors (~ $400)
you might also want to spend on the nVidia glasses and emitter kit (~
$200)

2) The 120 Hz LCDs are not supported under Linux drivers by nVidia at
present. Whether it might actually work or not, I can't say. I am
encouraged by the mention that the nVidia emitter can accept a signal
from the mini-DIN stereo port on some Quadro cards.
http://www.nvidia.com/object/quadro_pro_graphics_boards.html

3) As someone mentioned already, the Zalman LCD monitors, which are not
120Hz and do not require goggles, but have diminished resolution, are
currently supported.


Cheers,


-- 
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


On Thu, 2009-12-17 at 11:09 -0500, Michael J Miley wrote:
 I have a linux workstation with a nvidia quadro graphics card and 
 matching emitter/lcd glasses setup from realD. It is very hard to find 
 CRTs that are able to support the high refresh rates needed for headache 
 free 3D viewing. The old SGI one I have is terrible, as it flickers bad 
 in 3d mode.
 
 My question is can i use one of these new 120hz LCD monitors with the 
 above setup for coot. Basically just switch out the crt for the LCD. Has 
 anyone tried this?
 
 I am aware that these monitors with a non-quadro nvidia card plus the 
 nvidia emitter/glasses setup will not work with coot. But i think the 
 reason is that the drivers for these non-quadro cards do not support 
 true quad buffered stereo.
 
 


Re: [ccp4bb] [COOT] 120hz LCDs and coot stereo

2009-12-17 Thread David J. Schuller
On Thu, 2009-12-17 at 13:51 -0800, kai...@caltech.edu wrote:
 On this note,
   I recently bought a viewsonic 120hz LCD (VX2265wm)  in the naïve believe it 
 should work as it has the right refresh rate. I tried to run it with the 
 normal setup, quadro with emitter via DIN, nuVision glasses, Linux. Here's 
 the problem: I have stereo in the top and the bottom but not in the middle of 
 the screen. The image is stable (no flickering or moving of the part that 
 shows stereo). It seems that I got the right refresh rate (any way to check 
 that?), but I don't understand at all what's going on.
   Any clues?
 
 Jens


That monitor appears on the supported displays list:

http://www.nvidia.com/object/3D_Vision_Requirements.html

So the problem could be one (or more) of two things:

1) The glasses may be incompatible. You could try it out with the nVidia
glasses.

2) The Linux driver may not be working properly yet.


BTW, I see that some 1920x1080 monitors are listed on the above page,
and should be available in January or so.




-- 
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


Re: [ccp4bb] warning message: bound resonance

2009-11-20 Thread David J. Schuller
And a few guilty ones.
-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


On Fri, 2009-11-20 at 22:24 +0100, Gerard DVD Kleywegt wrote:
 'Allo! 'Allo!
 
 I suspect that you are looking for the CCPN mailing list rather than the CCP4 
 one. You have just confused thousands of innocent crystallographers!
 
 --dvd


[ccp4bb] Stereo 3D notebook

2009-11-19 Thread David J. Schuller
http://www.xbitlabs.com/news/mobile/display/20091118173434_Nvidia_Adds_Stereo_3D_Vision_to_Notebooks.html

Nvidia Adds Stereo 3D Vision to Notebooks. 
Asustek Computer to Add Stereo 3D to Mobile PCs
This is the 120 Hz LCD technology.


But still, no Linux drivers.


-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


Re: [ccp4bb] crystallography teaching advice: f(S) ?

2009-10-20 Thread David J. Schuller
On Tue, 2009-10-20 at 11:45 +0100, Phil Evans wrote: 
 On 20 Oct 2009, at 10:53, Kevin Cowtan wrote:
 
 I thought that the point of Enlightenment science was a rejection of  
 (Aristotelian) authority, basing science of empirical observations. If  
 properly conducted, Science is inherently not based on authority but  
 on evidence...

Indeed. The word expertise is more appropriate in science than authority. 
 
-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


Re: [ccp4bb] ALS cryopucks

2009-09-29 Thread David J. Schuller
Are you looking for the original ALS puck, or the Universal V1-Puck
which is designed for compatibility with both ALS and SSRL systems?

Uni-Puck:

Crystal Positinoing Systems

https://secure.crystalpositioningsystems.com/Uni-Puck.html


-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


On Mon, 2009-09-28 at 17:03 -0400, Alexandra Deaconescu wrote:
 Dear all:
 
 
 Does anyone know of a company other than Boyd Technologies that sells
 the ALS cryopucks? The item is no longer available from Boyd so I am
 trying to find alternative vendors...
 
 
 Thanks,
 Alex
 
 
 Alexandra M. Deaconescu
 Postdoctoral Fellow
 Grigorieff Laboratory
 Brandeis University
 Rosenstiel Center MS 029
 415 South St.
 Waltham, MA 02454
 USA
 
 
 For deliveries:
 Brandeis University
 Kalman Dock
 415 South St.
 Waltham, MA 02454
 USA
 
 
 
 
 
 


Re: [ccp4bb] Summary for weak magnet of goniometer of MAR345dtb

2009-08-30 Thread David J. Schuller
On Sun, 2009-08-30 at 22:13 +0800, aidong wrote: 
 As a  
 matter of fact, I believe that such a robot is really useless for home  
 source X-ray.

In my experience, the phrase as a matter of fact is more often
followed by an opinion than a fact.


-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


Re: [ccp4bb] space groups not supported by Refmac5

2009-08-17 Thread David J. Schuller
For the latter, P21221, you could reindex to get P21212, which is
supported.

-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


On Mon, 2009-08-17 at 17:37 +0100, Arefeh Seyedarabi wrote:
 Hi,
 
 I have a question; recently I have encountered a few space groups which are
 not supported by Refmac5. Examples include I2 and P21221. Both these space
 groups have been identified as the best solutions for the two different
 datasets I am working on using Pointless. However, I am faced with
 difficulties in Refmac5, and the program fails to complete when I select
 refinement cycles with Arp-waters...with the message saying 'space group not
 supported'.
 
 Any suggestions on how this problem could be overcome?
 
 Regards,
 
 Arefeh
 
 Arefeh Seyedarabi, PhD
 Postdoctoral research assistant
 School of Biological and Chemical sciences
 Queen Mary, University of London
 Mile End road
 London
 E1 4NS
 Based at Joseph Priestley Building G.35
 
 020 78828480


Re: [ccp4bb] Best 3D stereo combination for Linux

2009-07-01 Thread David J. Schuller
Warren: why should a 120 Hz LCD monitor with the nVidia USB
emitter/glasses require a Quadro card? The system requirements for
GeForce 3D Vision on Windows lists many GeForce cards as being
supported:

http://www.nvidia.com/object/GeForce_3D_Vision_Requirements.html

GeForce GTX 200 series
...

Geforce 9 series
...

Geforce 8 series
...


I should think it unlikely that the hardware requirements under Linux or
MacOS would differ drastically, if and when those OSes are covered by a
driver.


-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


  Original message 
 Date: Wed, 1 Jul 2009 01:31:12 -0700
 From: Warren DeLano war...@delsci.com  
 Subject: Re: [ccp4bb] Best 3D stereo combination for Mac OS X
 today  
 To: CCP4BB@JISCMAIL.AC.UK
 
Danny,
 
Thank you (and Harry and Dirk) for pointing out the
after-market PNY card -- I wasn't aware of that
option.
 
However, it is worth noting that PC users can access
stereo 3D (via 3D Vision IR emitter  glasses)
with a $139 Quadro 300-series card whereas Mac users
must spend 12X more for an ultra high-end
4000-series card (which will only work IF they
happen to own a compatible Mac Pro model). 
Unfortunately, all the GPU power of an expensive
ultra-high-end-card provides little (if any) benefit
if all you're running is Coot, PyMOL, CCP4mg...
 
Anyway, my point is that there is presently a
significant (and possibly increasing) lack of parity
for the Mac versus the other platforms with respect
to stereo 3D.  Furthermore, because of nVidia's
introduction of their proprietary USB-based emitter
(which syncs the 120 Hz LCDs), it isn't yet clear
whether or these displays will work only on Windows,
only on Windows and Linux, or indeed across all
three platforms. 
 
Personally, I would want to know the answer to that
question before spending $4-6k+ USD on a
Quadro-equipped Mac Pro!
 
Cheers,
Warren
 
-Original Message-
From: Danny Smith [mailto:smi...@omrf.ouhsc.edu]
Sent: Tue 6/30/2009 4:03 PM
To: Warren DeLano
Cc: Danny G Smith; CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] Best 3D stereo combination for
Mac OS X today
 
Warren,
 
Thank you very much for the quick reply.  I didn't
see it directly 
with the mac, but this link still has it at the
store,
   
 http://store.apple.com/AppleStore/WebObjects/BusinessCustom.woa/9554008/wa/PSLIDfind=Quadro+FX+4800+for+Macwosid=7Q4ITeYWEwd92YhZCy32JoVJnH4
.  It is very expensive at $1,746.00.  I also found
this link,
   
 http://www3.pny.com/NVIDIA-Quadro-FX-4800-For-Mac-P2815C409.aspx
.  It looks like on that page that it is tested with
Mac OS X v10.5.7, 
on MacPro3,1 or MacPro4,1 or later - Note: MacPro1,1
and MacPro2,1 are 
not compatible.  I was just hoping to find a cheaper
card.  It does 
make me want to do more research with our sales rep.
 
thanks,
 
Danny G. Smith
Sr. Programmer / Analyst
Oklahoma Medical Research Foundation
825 N.E. 13th Street M.S. 11, Room E210.1
Oklahoma City, OK 73104
Phone: (405)271-8001 ext. 35535  Cell:
(405)-202-6691
 
On Jun 30, 2009, at 5:25 PM, Warren DeLano wrote:
 
 Danny,

 Last I checked, Apple dropped the Quadro option
from the Mac Pro, 
 and a
 quick check on Apple.com seems to confirm that:


   
 http://store.apple.com/us_smb_78313/browse/home/shop_mac/family/
 mac_pro

 Lacking indications to the contrary, we can only
conclude that OpenGL
 stereo 3D support has an uncertain future on the
Mac, whereas nVidia
 appears fully committed to supporting it under
Windows XP, Vista, and
 Linux.

 120 Hz LCDs are very close to being, but are not
quite yet, a viable
 option. Hopelly that will change in a matter of
weeks, however, they
 will likely require a quadro card, 3D vision
emitter, and an 
 appropriate
 driver from nVidia.  Mac support for 120 Hz seems
unlikely unless 
 nVidia
 and Apple deliberately get together to create a
joint solution.  Due 
 to
 proprietary aspects of each component (Mac OpenGL
drivers, nVidia
 emitters), this isn't something either Apple or
nVidia could 
 accomplish
 alone.

 Zalman LCDs can do stereo 3D (with reduced
vertical resolution) but 
 they
 require software modifications or a Quadro card
with the updated 
 windows
 or linux driver

[ccp4bb] Sample shipping question

2009-03-19 Thread David J. Schuller
For your amusement/outrage:

A user of our synchrotron shipped samples in a deWar from overseas. The
deWar was held up by U.S. Customs, and we received the following from a
FedEx employee:

---
This shipment is delayed with US Customs.  We need to know the amount of
salt in the shipment in kilograms.  I have attached the commercial
invoice.  Can you provide this info?  Thank you.

(name redacted)
Senior ECO Import Coordinator
FedEx Trade Networks
---

-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


Re: [ccp4bb] protein folds

2009-02-26 Thread David J. Schuller
Concerning the number of proteins folds in existence vs. the number of
folds already identified:

Ed Berry had some good points regarding sample statistics, and I assume
the mathematics of that sort of thing is formalized somewhere. The
number of examples per protein fold will be skewed by the common use of
molecular replacement for phasing and the tendency of researchers
working in one field to solve several related structures. Keep in mind
also the mechanism through which new folds have evolved; i.e. through
the generation of new genes via duplication, insertion, deletions, point
mutations, and the occasional frame shift. That should be enough text to
give the impression that I am a serious person with serious ideas,
without conveying any actual useful information; so that I now feel
justified in changing the topic to a similar question in another field
which was published a few years ago, work done by one of those
ubiquitous and prolific Dodsons:

Estimating the diversity of dinosaurs
Steve C. Wang  Peter Dodson
PNAS September 12, 2006 vol. 103 no. 37 13601-13605 
Published online before print September 5, 2006, doi:
10.1073/pnas.0606028103

http://www.pnas.org/content/103/37/13601.abstract

Cheers,
-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


On Thu, 2009-02-26 at 14:19 +, ANDY DODDS wrote:
 The original poster may be interested in this paper from Phil Bourne's
 lab a few years ago which looked at the contribution of folds (among
 other things) by the Protein Structure Initiative, particularly Fig 5
 and table 1.
 
 http://helix-web.stanford.edu/psb04/bourne.pdf
 
 The Status of Structural Genomics Defined Through the Analysis of
 Current Targets and
 Structures
 
 P.E. Bourne, C.K.J. Allerston, W. Krebs, W. Li, I.N. Shindyalov, A.
 Godzik, I. Friedberg, T.
 Liu, D. Wild, S. Hwang, Z. Ghahramani, L. Chen, and J. Westbrook
...


[ccp4bb] Replacement for arp_waters?

2009-01-20 Thread David J. Schuller
I note that in CCP4 6.1.0, arp_waters has been deprecated. Is there a
program in the suite which fills the role formerly filled by arp_waters,
of automatically adding waters?

Cheers,
-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


Re: [ccp4bb] Planar Systems monitor

2008-12-15 Thread David J. Schuller
RE LCD monitor for stereo viewing:

No. That monitor, which looks like an ordinary 19 LCD monitor, is not
capable of stereo viewing. LCD monitors are in general not fast enough
for stereo.

There are some new technology LCD monitors which claim to be able to do
stereo, this is not one of them. 
http://www.reviewspring.com/3d-lcd-monitors-a80.php
such monitors are more expensive than bog-standard monitors, and I don't
know what the state of driver support is fro stereo viewing on them (not
to mention you don't state your oeprating system.)

Cheers,

-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   schul...@cornell.edu


On Mon, 2008-12-15 at 09:26 -0500, Oganesyan, Vaheh wrote:
 I came across this LCD monitor with DVI connection. Would experts in the
 field recommend this monitor for stereo viewing?
 
 http://www.pcconnection.com/IPA/Shop/Product/Detail.htm?sku=6220485
 
 Thank you.
 ___
 Vaheh
 
 
 
 To the extent this electronic communication or any of its attachments contain 
 information that is not in the public domain, such information is considered 
 by MedImmune to be confidential and proprietary.  This communication is 
 expected to be read and/or used only by the individual(s) for whom it is 
 intended.  If you have received this electronic communication in error, 
 please reply to the sender advising of the error in transmission and delete 
 the original message and any accompanying documents from your system 
 immediately, without copying, reviewing or otherwise using them for any 
 purpose.  Thank you for your cooperation.


Re: [ccp4bb] protein crystallography universe

2008-10-14 Thread David J. Schuller
pxuniverse - so you want to start out by excluding the nucleic acids
universe? ;)

Also, I note that it ends in .com. Will this be a commercial site? Will
you be selling ads or some such?

Cheers,
-  
===
You can't possibly be a scientist if you mind people
thinking that you're a fool. - Wonko the Sane
===
   David J. Schuller
   modern man in a post-modern world
   MacCHESS, Cornell University
   [EMAIL PROTECTED]


On Tue, 2008-10-14 at 14:47 -0500, Paul Swepston wrote:
 Folks:
  
 While attending the ICSG meeting in Oxford last month it struck me
 that there might be a need for a general protein crystallography
 portal containing information about software, websites, jobs,
 journals, organizations, education, etc.  While I realize that many
 people have created great lists of related websites for protein
 crystallography, I decided to create a new one and maintain it going
 forward.  It can be found at www.pxuniverse.com.  The inspiration for
 the name came from Ian Wilson's discussions about the structural
 biology universe and the impetus to create it came from Ian Wilson's
 discussion of  XtalPred, Derewenda's talk on SERp, and Sussman's
 great presentation about Proteopedia; it is difficult to keep up with
 all the innovations and pxuniverse is an attempt to give easier access
 to all the available tools.
  
 If you have any links that you would like to see added please send
 them directly to me.  If you have any suggestions about the
 organization, I will consider all suggestions.  
  
 Thanks - Paul Swepston


Re: [ccp4bb] Crystallogrphy today

2008-09-22 Thread David J. Schuller
On Mon, 2008-09-22 at 10:52 -0500, Jacob Keller wrote:
To understand the fundamentals of any discipline, I have always found
it 
 completely worthwhile to go back to the original source, where the
idea was 
 first discovered or presented. This is really, really valuable,
although not 
 always possible.

I have found this to be not possible, and therefore not valuable, in the
disciplines of fire-starting and wheel-building.

-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


[ccp4bb] 6.0.99

2008-07-27 Thread David J. Schuller
Downloaded CCP4 6.0.99 core and phaser. Did gunzip and tar to extract.

Next, the instructions say for the first 3 tarballs unpack into the
same directory, then configure...make...make install.

I did ./configure and got this:

! Please set environment variable BINSORT_SCR (see installation
instructions).
! Please set environment variable CCP4_SCR (see installation
instructions).
! Please set environment variable CINCL (see installation instructions).
! Please set environment variable CLIBD (see installation instructions).
! Please set environment variable CCP4_OPEN (see installation
instructions).
! Please set environment variable PUBLIC_FONT84 (see installation
instructions).


So apparently a config file is necessary first. Oops. Full text
of ./configure output is attached.
-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


# ./configure 




Please read the following


  NOTICE TO THE LICENSEE

  Please read the following Conditions of Use and the
  appropriate Licence Agreement carefully before completing
  the installation process and using the software. These
  Conditions and the Licence Agreement are legal documents, 
  and together contain information on allowed usage of the 
  software suite, warranty information and liability disclaimers. 
  If you do not agree with these Conditions, then do not
  complete the installation and do not use the software.

  These conditions have been updated for release 6.0 of
  the CCP4 software suite, and all sites are required to
  agree to these conditions of use. You should only be 
  prompted for this agreement once.

  The Conditions are as follows:

  a. For commercial users and those doing commercial work:
 Please contact CCP4 at [EMAIL PROTECTED] to arrange a 
 commercial licence. If you have arranged or renewed
 a commercial licence in the last 12 months, then no
 action is required. By agreeing to these conditions, you 
 confirm that you have a valid and current CCP4 commercial 
 licence. 

  b. For users at non-profit sites and not engaged in commercial
 work:
 Please print and complete an Academic licence, sign it and 
 post or fax it to CCP4 at the address given on the licence 
 (email is not acceptable). A new licence agreement is required 
 for CCP4 version 6.0. This licence is valid for 6.0 and subsequent 
 versions until further notice. Copies of the licence can be 
 found in a  variety of formats in the top directory of the CCP4 
 distribution (files academic_software_licence.*) and on the CCP4 
 web site at www.ccp4.ac.uk/ccp4license.html . By agreeing to these 
 conditions, you confirm that you have returned a licence 
 for CCP4 version 6.0 . It is sufficient to send the licence - 
 there will be no confirmation that it has been received.

  I agree to the above conditions and have done the actions
  required.



  y/n [n] ?:y


 Thank you. The CCP4 configure will now run as normal.
srcdir bindir libdir /usr/local/ccp4_master/ccp4-6.0.99e 
/usr/local/ccp4_master/ccp4-6.0.99e/bin /usr/local/ccp4_master/ccp4-6.0.99e/lib
OK, setting up for a system type of `linux'...


! Using gnu fortran compiler.  If you have an old fortran compiler, you may be 
better
! off using f2c, see --with-f2c option.

 Will attempt to install the xwindows programs from `x-windows'.
 This is not supported for all systems.
  please note 
 the xwindows programs will be compiled with an option
 that means errors are ignored. This could result in some
 xwindows programs not being compiled.
 If you want to disable the xwindows programs use --disable-x

 The CCIF library will be built and installed.
 This has been tested on the most common systems, but if 
 you have problems, use the --disable-ccif flag.

 The CCTBX library will be built and installed.
 If you have problems, use the --disable-cctbx flag.

 Phaser will be built and installed.
 If you have problems, use the --disable-phaser flag.

 The LAPACK linear algebra package will be included in the installation.
 Configure will search for existing LAPACK and BLAS libraries on
 on your system - if a version of LAPACK is not found then the NetLib
 version will be built for you automatically.
 If you want NetLib LAPACK and BLAS to be used regardless of
 system libraries then rerun configure using --with-netlib-lapack

 To disable inclusion of LAPACK, use the --disable-lapack flag
 (This is not recommended as some programs will fail to build)

 Configure will try

Re: [ccp4bb] Small lysozyme crystals protocol

2008-07-04 Thread David J. Schuller
Rigaku has a page of common crystallization recipes:
http://www.rigaku.com/protein/crystallization.html

Try the Lysozyme crystallization procedure for low temp use recipe. It
contains ethylene glycol so the crystals are cryo-ready. To get a large
number of smaller crystals, push the concentration of lysozyme solution
up to 100 - 120 mg/ml.

Cheers,

-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]



On Thu, 2008-07-03 at 18:08 -0500, Jacob Keller wrote:
 Dear Crystallogrphers,
 
 does anybody here know a protocol to get consistently well-diffracting but 
 smaller, ~50um, cryoprotect(ed/able) lysozyme crystals?
 
 Thanks,
 
 Jacob Keller
 
 ***
 Jacob Pearson Keller
 Northwestern University
 Medical Scientist Training Program
 Dallos Laboratory
 F. Searle 1-240
 2240 Campus Drive
 Evanston IL 60208
 lab: 847.491.2438
 cel: 773.608.9185
 email: [EMAIL PROTECTED]
 ***
 
 - Original Message - 
 From: Ailong Ke [EMAIL PROTECTED]
 To: CCP4BB@JISCMAIL.AC.UK
 Sent: Thursday, July 03, 2008 4:13 PM
 Subject: [ccp4bb] air bubbles in the Bio-Rad Duoflow system
 
 
  Hello All,
 
  I own a Bio-Rad Duoflow system for almost a year. The machine lived up to 
  some of the recommendations I saw on this board. However, there is this 
  annoying problem with air bubbles entering columns and I cannot figure out 
  the source. The system would be free of any air bubbles in the beginning, 
  and performs fine when water is loaded using needle/syringe into the 5ml 
  superloop and then injected into the column. When protein samples are 
  injected the same way, a lot of air bubbles would appear and get trapped 
  inside the ion exchange column, leaving yellowish marks on the Uno columns 
  and eventually reducing their performance. I've been a FLC/AKTA user for 
  about ten years and have never seen such problems. I doubt it is due to a 
  faulty injection valve because we recently had it replaced for other 
  reasons. We did move a backpressure generator (a little black piece) from 
  post-column position to before-column, otherwise we cannot run sizing 
  columns in a reasonable flow rate.
 
  I'd like to hear if you have similar experiences and how you fixed the 
  problem. Thanks a lot!
 
  Ailong
 
  -- 
  


Re: [ccp4bb] stereo with Nvidia Quadro

2008-05-08 Thread David J. Schuller
The nVidia cards used for stereo are the Quadro FX series. The Quadro
NVS series are for running multiple monitors, but not fancy 3D graphics.
You can explore the manufacturer's web site for details.


-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]



On Thu, 2008-05-08 at 15:01 +0200, Tim Gruene wrote:
 Good day,
 
 I have been trying to enable stereo mode on a PC (SuSE10.1) with an NVIDIA
 NV37GL [Quadro FX 330/Quadro NVS280] graphics card (according to 
 Xorg.0.log).
 
 (--) PCI:*(5:0:0) nVidia Corporation NV37GL [Quadro FX 330/Quadro NVS280] 
 rev
 162, Mem @ 0xdd00/24, 0xc000/28, 0xde00/24, BIOS @ 
 0xdfc0/17
 (II) NVIDIA(0): NVIDIA GPU Quadro NVS 280 PCI-E at PCI:5:0:0 (GPU-0)
 
 Accroding to some web page about O, the options are set to
 (**) NVIDIA(0): Option Stereo 3
 (**) NVIDIA(0): Option NvAGP 1
 (**) NVIDIA(0): Option IgnoreEDID false
 (**) NVIDIA(0): Option UseEdidFreqs true
 
 Yet, the log file says
 (WW) NVIDIA(0): Stereo is only available on Quadro cards
 (II) NVIDIA(0): Disabling stereo.
 
 I was wondering whether anyone could explain what is so un-Quadro about 
 this
 card?
 
 (Currently, the display is an LCD, but the same messages came up when the
 display was a CRT)
 
 Thank you for your help,
 Tim
 
 
 --
 Tim Gruene
 Institut fuer anorganische Chemie
 Tammannstr. 4
 D-37077 Goettingen
 
 GPG Key ID = A46BEE1A


[ccp4bb] Kay Diederichs and Novel_R source?

2008-04-21 Thread David J. Schuller
I would like to get a hold of the program Novel_R, the source code for
which is supposed to be available on Kay Diederichs' web site. However,
the links I have seem to be outdated. Does Diederichs have a new web
site, and is the Novel_R source still available?

The outdated link:
http://strucbio.biologie.uni-konstanz.de/~kay

Thanks,

-- 
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


Re: [ccp4bb] Merging CCP4i projects from two computers

2008-03-07 Thread David J. Schuller
Unison is good, as is rsync, but in this particular case will be
complicated (if ( understand correctly) by the use of the identical file
names for different files on the two computers. I don't see an easy,
automatic way around this. I would rename one or some of the
directories, put them on the same computer, and then manually go through
them and decide which ones are duplicates, and which are unique but
identically named files, and rename those.

If this is a Unix/Linux system, it might be useful to know that the
diff command can work on an entire directory, if you plead with it
sincerely enough and use the right parameters.

In future, unison or rsync could be used on a regular basis to avoid
another situation like this arising. Back in the good old days, we were
able to share disks between computers with something called NFS, and
even further back, file versioning in VMS might have been relevant and
useful. But I am wandering.

Cheers,

-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]



On Fri, 2008-03-07 at 12:15 +, Johan Turkenburg wrote:
 Hi,
 
 The way I cope with this is by using synchronisation between directories 
 (folders) on the two computers. In my case both are running linux, and 
 the program Unison provides a simple tool to synchronise. If you make 
 sure the projects have the same name on the two computers, the cpp4 
 database files copy over ok, and the interface copes ok. I am sure this 
 method is easy to break, so be careful trying it out!
 
 Johan
 
 P.J.Briggs wrote:
  Hi Derek
  
  There's not really any way of doing what you're asking at present. If
  merging utility would be useful to others then I would be prepared to
  look into providing one, although there are a bunch of fiddly issues to
  deal with (e.g. keeping dates consistent, handling file name clashes and
  so on).
  
  Do any other readers of this list want to comment?
  
  Best wishes
  
  Peter
  
  Derek Logan wrote:
  Hi everyone,
 
  I've been working on a project using CCP4i on two separate computers in
  parallel and now unfortunately have jobs spread over the two locations.
  I would now like to consolidate these. Some of the new jobs on one
  computer will have the same run number as different ones on the other.
  Is there any convenient way to merge the projects? I guess the answer is
  no, or else the question would have been asked and answered already ;-)
 
  Thanks
  Derek
  --
 
  Derek Logan tel: +46 46 222 1443
 
  Molecular Biophysicsfax: +46 46 222 4692
 
  Lund University mob: +46 76 8585 707
 
  Box 124, Lund, Sweden
 
 
  
 


Re: [ccp4bb] Unknown density

2008-02-25 Thread David J. Schuller
Remember that since it is on a special position (2-fold?), you may not
be looking at a single object, but an overlay from two or more
positions.

The anomalous map is very useful; the mystery molecule must have an
anomalous scatterer. It would be even more helpful if you had mentioned
the wavelength of the data. Anyway, the only thing in the list of mother
liquor ingredients you provided that scatters anomalously is calcium,
which fits in with the Asp ligands. The additional ligands for the
calcium might be water or acetate.

So: my guess would be two positions of Ca2+, one right on the axis and
one off the axis (and doubled by the symmetry). You can try placing Ca
atoms at these positions and see what the occupancies and thermal
factors refine to. For example, start with an occupancy of 0.5 at each
position and see if the thermal factors refine to a value comparable to
nearby protein atoms.

Cheers,

-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]



On Mon, 2008-02-25 at 11:54 +0100, Franck Coste wrote:
 As Edward MITCHELL suggested, I made a phased anomalous difference map
 and could clearly see the S atom of my sulfide bridges and 1 Ca atom as
 I espected. Concerning the unknown density, the shape is the same as in
 the fo-fc map  Updated images at :
 http://unknowndensity.blog4ever.com/blog/photo-183078.html
 In yellow is the phased anomalous difference map at 4 sigma.
 Franck.


Re: [ccp4bb] Engineering disulfide bonds

2008-02-08 Thread David J. Schuller
On Fri, 2008-02-08 at 10:44 -0500, Kendall Nettles wrote:

 Also, can I expect 100% disulfide formation  from standard bacterial
 expression (assuming good geometry of the cysteines)?

No, E. coli cells are a reducing environment.

-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


Re: [ccp4bb] Web site GOOD, Attachment BAD

2008-01-31 Thread David J. Schuller
On Thu, 2008-01-31 at 08:12 -0500, Raji Edayathumangalam wrote:
 Can the CCP4BB provide something like a website to upload pictures and then 
 have the BB-ers just
 post the link in their email. Please!
 
 These attachments are clogging my inbox...
 
 Thanks much.
 Raji

If you're talking about an open site where anyone can post, then we
could run a contest to predict how long it takes for it to be hacked and
used for illegal file dispersal. If you're talking about a site where
CCP4 personnel could remove attachments from incoming e-mail and post
them on the site, I suspect that CCP4 personnel would prefer not to
handle that extra work load. The same for a site where CCP4 personnel
would administer private accounts for users to post. I think it's better
if each person finds their own site where they can securely post.

Cheers,
-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


Re: [ccp4bb] Cocrystals - should they pop up under native conditions?

2008-01-22 Thread David J. Schuller
Don't call them co-crystals until you've actually shot them and seen
the density.

It will depend not only on the ligand but on the ligor(?) as well.

You don't mention the identity of your ligand or ligor(?). You mention
that some of your screens are under oil, so I will point out that some
non-polar ligands might prefer to partition in the oil rather than the
mother liquor. That would explain why the crystals look so much like the
native.

Posting to the BB is always a valuable way to fill time until you can
collect the data which will answer the question.

Cheers,
-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]



On Tue, 2008-01-22 at 19:33 +, Brenda Patterson wrote:
 Hello all,
 
 I am expecting a somewhat homogeneous reply to this one, but that is fine and
 welcomed as are anecdotal experiences.
 
 I am running co crystallisation experiments and have thus far been trying 
 under
 oil screens with some success (i.e. various hits in various conditions
 resulting in crystal growth).  These conditions have varied from the native
 condition up until now.  I have recently peered at some fairly old plates I 
 set
 up under hanging drop under native conditions when running a co crystal trial
 and have found crystals.  Their morphology is very similar to the 'native'
 form.  I bit punier than them if I had to push.
 
 So,
 
 1.  Should I be surprised that co crystals pop up under native conditions or
 does it entirely depend on the ligand?
 
 2.  Is it probably not going to be a co crystal as usually they don't pop up
 under native conditions?
 
 3.  It totally depends and if I don't like it then I should get out of this
 beautiful game?
 
 I am going to shoot them either way, but just thought I would ask.
 
 
 cheers
 
 Brenda


Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread David J. Schuller
On Wed, 2008-01-09 at 12:47 +0100, Gerard DVD Kleywegt wrote:

 (rhetorical question of the day: just like teaching a person how to fish is 
 better than to give them a fish, isn't providing the url to google or 
 wikipedia better than providing an answer to a basic question?)

You can read a few paragraphs about The spirit of helpfulness here:

http://en.wikipedia.org/wiki/Wikipedia:Help_desk/How_to_answer

-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


Re: [ccp4bb] Have a happy new year with your very own crystallography system!

2008-01-07 Thread David J. Schuller
On Mon, 2008-01-07 at 18:22 +, Erin Curry wrote:

 Tired of embarrassing incidents at the beamline?...



Alright, who's been telling stories?

-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


Re: [ccp4bb] detecting RNA from possible protein-RNA complex crystals

2007-12-11 Thread David J. Schuller
On Tue, 2007-12-11 at 13:00 -0500, Rongjin Guan wrote:
 Dear All
  
 I am trying to co-crystallize a protein and dsRNA complex, and looking
 for methods
 to detect RNA in the crystals. I am thinking about using Mass
 Spectrum, Nanodrop to
 measure OD280/260, etc, but I wonder if ther are some more sensitive
 and reliable ways. 

Sensitive and reliable - you could solve the crystal structure.

-  
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


[ccp4bb] Installation problem on Fedora 8

2007-11-20 Thread David J. Schuller
I am attempting to install and compile CCP4-6.0.2 along with BLT,
Chooch, etc under Fedora 8. I am doing this under the root account, with
a default login shell of tcsh. When I run install.sh, BLT and Chooch
apear to install OK and then I get these error messages:

##
# CCP4 Installation  #
##

Creating ccp4.setup file...
sed: can't read /root/ccp4-6.0.2/include/ccp4.setup-sh: No such file or
directory
./install.sh: line 477: /root/ccp4-6.0.2/include/ccp4.setup-sh: No such
file or directory
sed: can't read /root/ccp4-6.0.2/include/ccp4.setup-zsh: No such file or
directory
./install.sh: line 479: /root/ccp4-6.0.2/include/ccp4.setup-zsh: No such
file or directory
sed: can't read /root/ccp4-6.0.2/include/ccp4.setup-dist: No such file
or directory
./install.sh: line 481: /root/ccp4-6.0.2/include/ccp4.setup-dist: No
such file or directory
sed: can't read /root/ccp4-6.0.2/include/ccp4.setup-bash: No such file
or directory
./install.sh: line 483: /root/ccp4-6.0.2/include/ccp4.setup-bash: No
such file or directory
./install.sh: line 504: cd: ccp4-6.0.2: No such file or directory
cp: cannot stat `include/ccp4.setup-dist': No such file or directory
./install.sh: line 506: include/ccp4.setup-sh: No such file or directory

[EMAIL PROTECTED] ccp4_master]# pwd
/usr/local/ccp4_master
[EMAIL PROTECTED] ccp4_master]# echo $CCP4_MASTER
/usr/local/ccp4_master

--

The installation is by default supposed to happen in the current
directory, but references to the current directory in install.sh as
${current} seem to be failing, as though each command were instead being
executed from root's home directory. Help, anyone?

Cheers,
-- 
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


Re: [ccp4bb] speeding crystallisation

2007-08-06 Thread David J. Schuller
On Mon, 2007-08-06 at 15:50 -0400, Neeraj wrote:
 hi all,
 I am working on a protein for which we get nicely diffracting 
 crystals but the problem is that the crystals grow from anywhere between 
 4-6 months. Does anyone has any general suggestions as to what things 
 can be changed or tried to speed up the process. Any help or suggestions 
 would be welcome as i am crawling towards getting enough crystals to 
 make a synchroton visit:):)

Perhaps some degradation such as proteolysis is necessary before
crystallization. Try working in less clean conditions.

Or, you could take some of your existing crystals and subject them to
analysis, such as mass spec. If there is something like proteolysis
occurring, you may be able to identify the site that way, and pre-cut
your protein, or even engineer a shorter version. We did something
similar to this for heme oxygenase.

Cheers,

-- 
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


Re: [ccp4bb] difference density ripples around Hg atoms

2007-08-01 Thread David J. Schuller
On Wed, 2007-08-01 at 09:35 +0200, Klemens Wild wrote:
 Dear friends of the Fourier transform,
 
 I am refining a structure with 2 adjacent Hg atoms bound to cysteines of 
 different monomers in the crystal contacts, which means I need to refine 
 them as well. While the structure nicely refines (2.2 A data), I do not 
 get rid of negative density ripple layers next to them (-10 sigmas). My 
 question: is this likely due to anistropy of the soft mercury atoms 
 (anisotropic  B refinement decreases the ripples) or is this likely a 
 summation truncation effect prominent for heavy atoms? Can I just 
 anistropically refine the mercuries while I keep the rest isotropic? 

Yes, that sounds worth a try. At 2.2 A you probably don't have the
data/parameter ratio to justify anisotropic refinement for the whole
molecule, but since you know the mercury atoms are not being treated
adequately, adding an extra ~ 10 parameters to refine them as
anisotropic is worth a try. Don't expect it to completely eliminate the
ripples, but hopefully you can get some improvement on R/Rfree.

Cheers,

-- 
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


Re: [ccp4bb] Survey on computer usage in crystallography

2007-06-20 Thread David J. Schuller
On Tue, 2007-06-19 at 21:09 -0700, P Hubbard wrote:
 Hi all,
 
 I am doing a survey on computer usage in crystallography. The questionnaire 
 can be found on the following web page:
 
 http://www.bioscienceforum.com/survey.html
...

I don't care for the way several questions are posed. Examples:

4.What would you consider is a reasonable price to pay for a
computer graphics workstation designed with crystallography in mind?

A) USD $2000-3000
B) USD $3000-5000
C) USD $5000+


What, no option for I'd be willing to assemble one from parts for under
USD $2000?

...
If there were a choice, would you prefer stereo graphics displayed
using LCD-shuttered glasses or a head mounted display (often referred to
as a Virtual Reality headset)?

That does not cover all the choices currently available, let alone what
I wish were available.


-- 
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


Re: [ccp4bb] image plate shadow

2007-05-03 Thread David J. Schuller
On Thu, 2007-05-03 at 19:51 -0300, Alejandro Buschiazzo wrote:
 Dear ccp4bb users,
 
 I have a question that concerns a problem with data collection (not 
 directly related to CCP4). It might be a really stupid mistake I'm making...
 
  I'm attaching a diffraction frame where, as you can easily see, there 
 is an annoying shadow...

I agree with the others that the shadow could indeed be caused by your
pin, and is not a problem as the software commonly in use corrects for
local background. If you want to reduce the shadow, you could reduce the
air scatter in between the collimator and the crystal. A shorter
distance would mean less air scatter, but of course you don't want your
collimator to impinge on your cryo stream. Possibly details of the
collimator could be contributing, I don't know anything about hte design
or quality of collimator you are using. Another way to reduce air
scatter would be to reduce the air by putting the experiment in a helium
box.

-- 
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]


Re: [ccp4bb] X-ray generator uninterruptible power supply

2007-03-22 Thread David J. Schuller
On Thu, 2007-03-22 at 18:54 -0400, [EMAIL PROTECTED] wrote:

 I never considered getting a UPS for my generator, even though our building
 has no backup power and Con Ed also forgets to feed their hamsters
 occasionally.  What I did get was a UPS for my cryostream - I figured that
 the data collection can always be restarted if the generator died in the
 middle of the night, but once the crystal is gone, it's gone.  I paid less
 than $10k for a UPS that can run my Cryojet for over 15 hours, so even if
 the power goes out in the middle of the night, I can come in and rescue the
 crystal the next day.

That's a good idea, we do that now on our crystallography beamlines.

-- 
===
With the single exception of Cornell, there is not a college in the
United States where truth has ever been a welcome guest - R.G. Ingersoll
===
  David J. Schuller
  modern man in a post-modern world
  MacCHESS, Cornell University
  [EMAIL PROTECTED]