[ccp4bb] Doctoral researcher positions - Oulu, Finland

2023-10-04 Thread Lari Lehtiö
Dear colleagues,

There are three (3) doctoral researcher positions available in our teams to 
study human mono-ADP-ribosyltransferases. The projects focus on biochemical, 
biophysical and structural studies of the multidomain enzymes and their 
activation. Selected candidates will also contribute to the development of 
specific inhibitors for these PARPs. Please feel free to forward this link in 
case you know someone who may be interested.

https://oulunyliopisto.varbi.com/en/what:job/jobID:661910/type:job/where:4/apply:1

Best wishes,

Lari Lehtiö & Albert Galera Prat


______
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
https://www.oulu.fi/en/research-groups/lari-lehtio-structural-and-chemical-biology-adp-ribosylation
https://twitter.com/LabLehtio
_



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Re: [ccp4bb] Dry shipper in limbo

2023-07-28 Thread Lari Lehtiö
Dear all,

Just a note as we have been experimenting with this lately after some lost 
shipments.

We went with Lightbug pro and are ordering more of those.
https://lightbug.io/product/pro/

One can customize it to send updates only when moving out of the premises or 
geofence to significantly lower the costs of updates and there is an API one 
can use for integration. It is also not limited to Apple ecosystem as we do not 
need to have an iDevice to connect to it and there does not need to be an 
iPhone in the storage facility where the lost dewar is. We aim to add a dewar 
management and tracking system to the IceBear we use to track crystallization, 
crystals and data  (this feature not yet available) and that is also why these 
features are rather important for us.
https://icebear.fi/

This is just one possibility but based on the testing we have been happy with 
this solution. And of course, since we started using it, the couriers have not 
lost any dry shippers.

Best wishes,

Lari


__
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
https://www.oulu.fi/en/research-groups/lari-lehtio-structural-and-chemical-biology-adp-ribosylation
https://twitter.com/LabLehtio
_


From: CCP4 bulletin board  on behalf of Jurgen Bosch 

Sent: Friday, July 28, 2023 3:34 PM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: Re: [ccp4bb] Dry shipper in limbo

The AirTag is a good idea, I shall implement that. I’ve had samples stuck from 
Canada to US, also in Memphis. It was just protein on dry ice but needless to 
say when it arrived it was very dry but no ice.
Hopefully you will be lucky and retrieve your samples within the next 14 days.

Jürgen

__
Jürgen Bosch, PhD, MBA
Center for Global Health & Diseases
Case Western Reserve University

https://www.linkedin.com/in/jubosch/

CEO & Co-Founder at InterRayBio, LLC

On Jul 28, 2023, at 07:50, Jon Cooper 
<488a26d62010-dmarc-requ...@jiscmail.ac.uk<mailto:488a26d62010-dmarc-requ...@jiscmail.ac.uk>>
 wrote:

Hello, I don't do anything MAC but maybe shipping dewars would be a good 
situation for an Apple Airtag, which I read about recently, or equivalent, if 
there are any?

Best wishes, Jon Cooper. 
jon.b.coo...@protonmail.com<mailto:jon.b.coo...@protonmail.com>

Sent from Proton Mail mobile



 Original Message 
On 28 Jul 2023, 08:56, Savvas Savvides < 
9d24f7f13e09-dmarc-requ...@jiscmail.ac.uk<mailto:9d24f7f13e09-dmarc-requ...@jiscmail.ac.uk>>
 wrote:

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 Mem

Re: [ccp4bb] Crystallography course in Oulu, Finland May29-June2

2023-05-23 Thread Lari Lehtiö
Dear Colleagues,

Just a small update that there is possibility to follow some of the content 
online. Quick registration is required and please note that the times in the 
program are in EEST.
https://www.oulu.fi/en/events/instruct-eric-course-macromolecular-x-ray-electron-and-neutron-crystallography-2023

Best wishes,

Lari


__
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
https://www.oulu.fi/en/research-groups/lari-lehtio-structural-and-chemical-biology-adp-ribosylation
https://twitter.com/LabLehtio
_


From: Lari Lehtiö
Sent: Friday, March 31, 2023 12:41 PM
To: CCP4BB@JISCMAIL.AC.UK 
Subject: Crystallography course in Oulu, Finland May29-June2

Dear colleagues,

We are organizing an Instruct-ERIC course in Oulu on X-ray, neutron and 
electron crystallography. Please see the details in the web pages.

https://instruct-eric.org/events/instruct-eric-course-on-macromolecular-x-ray-electron-and-neutron-crystallography-2023/

https://www.oulu.fi/en/events/instruct-eric-course-macromolecular-x-ray-electron-and-neutron-crystallography-2023

The deadline for applying to the practical on-site part is 10.4.2023.

Best wishes,

Lari




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[ccp4bb] Crystallography course in Oulu, Finland May29-June2

2023-03-31 Thread Lari Lehtiö
Dear colleagues,

We are organizing an Instruct-ERIC course in Oulu on X-ray, neutron and 
electron crystallography. Please see the details in the web pages.

https://instruct-eric.org/events/instruct-eric-course-on-macromolecular-x-ray-electron-and-neutron-crystallography-2023/

https://www.oulu.fi/en/events/instruct-eric-course-macromolecular-x-ray-electron-and-neutron-crystallography-2023

The deadline for applying to the practical on-site part is 10.4.2023.

Best wishes,

Lari




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[ccp4bb] Postdoctoral researcher position in Oulu, Finland

2022-11-01 Thread Lari Lehtiö
Dear colleagues,

There is a postdoctoral researcher position available in my team. The projects 
are on structural biology and biophysical studies with some drug discovery 
aspects. Please forward this link in case you know someone who may be 
interested.

https://rekry.saima.fi/certiahome/open_job_view.html?did=5600=en=14114=1

Best wishes,

Lari


__
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
https://www.oulu.fi/en/research-groups/structural-and-chemical-biology-adp-ribosylation
https://twitter.com/LabLehtio
_



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[ccp4bb] Two doctoral researcher positions - Oulu, Finland

2022-06-21 Thread Lari Lehtiö
Dear colleagues,

There are two doctoral researcher positions available in my team on drug 
discovery in the field of ADP-ribosylation. The projects are on biophysical 
studies on enzyme activation as well as in developing specific inhibitors. 
Please forward this link in case you know someone who may be interested.

https://rekry.saima.fi/certiahome/open_job_view.html?did=5600=en=13586=1

Best wishes,

Lari


__
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
https://www.oulu.fi/en/research-groups/structural-and-chemical-biology-adp-ribosylation
https://twitter.com/LabLehtio
_



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[ccp4bb] PhD student position - drug discovery & ADP-ribosylation

2022-03-21 Thread Lari Lehtiö
Dear colleagues,

There is a doctoral researcher position available in my team on drug discovery 
in the field of ADP-ribosylation. We use extensively crystallography to support 
inhibitor development efforts. Please forward this in case you know someone who 
may be interested.

https://rekry.saima.fi/certiahome/open_job_view.html?did=5600=en=13109=1

Best wishes,

Lari

__
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
https://www.oulu.fi/en/research-groups/structural-and-chemical-biology-adp-ribosylation
https://twitter.com/LabLehtio
_



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[ccp4bb] Course on X-ray, electron and neutron crystallography - summer 2021

2021-05-19 Thread Lari Lehtiö
Dear Colleagues,

We are organizing an Instruct-ERIC training course on X-ray, electron and 
neutron crystallography. The course is virtual, but it includes practicals and 
a possibility to collect data remotely at Diamond Light Source. Participants 
are selected based on applications while the lectures will be available for a 
wider audience. As the course is already at the end of June please forward this 
to the young researchers who could benefit from this opportunity. The deadline 
for the applications is 30th of May.

https://instruct-eric.eu/events/instruct-eric-course-on-macromolecular-x-ray-electron-and-neutron-crystallography

Best regards,

Lari

__
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
https://www.oulu.fi/university/focusarea/lifelong-health/spearhead-projects/lehtio
https://twitter.com/LabLehtio
_



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[ccp4bb] Open PhD student position

2020-12-16 Thread Lari Lehtiö
Dear all,

There is an open PhD student position in our team within a project focusing on 
structure and function of human tankyrases as well as on inhibitor discovery.

https://rekry.saima.fi/certiahome/open_job_view.html?did=5600=en=10302=1

Please feel free to forward this link to potentially interested young 
scientists.

Best regards,

Lari

__
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
https://www.oulu.fi/university/focusarea/lifelong-health/spearhead-projects/lehtio
https://twitter.com/LabLehtio
_



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[ccp4bb] PhD student position in Finland

2019-06-24 Thread Lari Lehtiö
Dear colleagues,


We have a 4-year PhD student position for 2020-2023 open in my team. The 
project focuses on structural and functional characterization of human 
ADP-ribosyltransferases.


For more details and application form please see the web application portal:

https://rekry.saima.fi/certiahome/open_job_view.html?did=5600=1=7633=en


Note that applications received by email will not be considered.


Best regards,


Lari



__
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
http://www.oulu.fi/biocenter/groups/lehtio
_



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Re: [ccp4bb] Crystallography course in Oulu, Finland

2019-02-21 Thread Lari Lehtiö
Dear all,


This is a reminder of the international crystallography course in Oulu, 
Finland. The program has been updated and we have extended the deadline to 
3.3.2019. Please see the web pages for details:


https://www.oulu.fi/biocenter/protein-crystallography/events/x-ray-neutron-2019


Best regards,


Lari



__
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
http://www.oulu.fi/biocenter/groups/lehtio
_



From: Lari Lehtiö
Sent: Thursday, January 31, 2019 9:02 AM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Crystallography course in Oulu, Finland


Dear all,

We are pleased to announce a course: “X-ray and neutron crystallography: from 
data collection to structures”. This intensive course is organized from May-13 
to May-17, 2019 at the Faculty of Biochemistry and Molecular Medicine, 
University of Oulu in Oulu, Finland. It is organized in the context of the 
iNEXT Horizon2020 project (http://www.inext-eu.org), together with Diamond 
Light Source, The European Spallation Source, Biocenter Oulu and the Health and 
Biosciences Doctoral Programme of the University of Oulu.

The course will include an introduction on the methods of protein and neutron 
crystallography and best practises in data collection are discussed. Tutorials 
include data processing, experimental phasing,  molecular replacement phasing 
and neutron structure refinement.

Remote data collection (Diamond Light Source) of crystals from participating 
students is scheduled for Thursday. The course provides extensive opportunities 
for the students to work with the presented software in our Linux class room 
and to interact with the expert teachers.

Students are encouraged to send crystals in advance, which will then be shipped 
to Diamond Light Source, for remote X-ray data collection. Students are also 
encouraged to bring their own raw X-ray data images which are difficult to 
process or their own X-ray data sets for which molecular replacement 
calculations have turned out to be difficult.

There is no registration fee. Applications for the course can be sent before 
24.02.2019. The course is aimed at PhD students and postdocs working on 
structural biology projects using X-ray or neutron diffraction methods. The 
application should include a CV, a motivation letter and a letter from the 
supervisor. Please also indicate if you plan to send crystals. Detailed 
information on how to apply, including a list of confirmed lectures and 
tutorials, is available at: 
https://www.oulu.fi/biocenter/protein-crystallography/events/x-ray-neutron-2019

On behalf of the organizers,

Lari Lehtiö




__
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
http://www.oulu.fi/biocenter/groups/lehtio
_



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[ccp4bb] Crystallography course in Oulu, Finland

2019-01-30 Thread Lari Lehtiö
Dear all,

We are pleased to announce a course: “X-ray and neutron crystallography: from 
data collection to structures”. This intensive course is organized from May-13 
to May-17, 2019 at the Faculty of Biochemistry and Molecular Medicine, 
University of Oulu in Oulu, Finland. It is organized in the context of the 
iNEXT Horizon2020 project (http://www.inext-eu.org), together with Diamond 
Light Source, The European Spallation Source, Biocenter Oulu and the Health and 
Biosciences Doctoral Programme of the University of Oulu.

The course will include an introduction on the methods of protein and neutron 
crystallography and best practises in data collection are discussed. Tutorials 
include data processing, experimental phasing,  molecular replacement phasing 
and neutron structure refinement.

Remote data collection (Diamond Light Source) of crystals from participating 
students is scheduled for Thursday. The course provides extensive opportunities 
for the students to work with the presented software in our Linux class room 
and to interact with the expert teachers.

Students are encouraged to send crystals in advance, which will then be shipped 
to Diamond Light Source, for remote X-ray data collection. Students are also 
encouraged to bring their own raw X-ray data images which are difficult to 
process or their own X-ray data sets for which molecular replacement 
calculations have turned out to be difficult.

There is no registration fee. Applications for the course can be sent before 
24.02.2019. The course is aimed at PhD students and postdocs working on 
structural biology projects using X-ray or neutron diffraction methods. The 
application should include a CV, a motivation letter and a letter from the 
supervisor. Please also indicate if you plan to send crystals. Detailed 
information on how to apply, including a list of confirmed lectures and 
tutorials, is available at: 
https://www.oulu.fi/biocenter/protein-crystallography/events/x-ray-neutron-2019

On behalf of the organizers,

Lari Lehtiö




__
Lari Lehtiö, Professor
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
http://www.oulu.fi/biocenter/groups/lehtio
_



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[ccp4bb] Postdoctoral position in Oulu, Finland

2018-04-06 Thread Lari Lehtiö
Dear all,


We have a position open for a postdoctoral researcher in a team focusing on 
structural biology and drug discovery. Information on our team and projects can 
be found from our web pages: http://www.oulu.fi/biocenter/groups/lehtio


More details regarding the position can be found in the following link. 
Application forms are available also through the link and applications are 
accepted only through the web-based system.


https://www.saimanet.com/certiahome/open_job_view.html?id=5405


Best regards,


Lari



__
Lari Lehtiö, PhD, Docent/Adjunct Professor
Biocenter Oulu
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
http://www.oulu.fi/biocenter/groups/lehtio
_


[ccp4bb] PhD student position in Oulu, Finland

2018-03-28 Thread Lari Lehtiö
Dear all,


We have a position open for a PhD student in the field of structural biology 
and drug discovery. The project focuses on structure and inhibition of 
ADP-ribosyltransferases. Information on our team and projects can be found from 
our web pages: http://www.oulu.fi/biocenter/groups/lehtio


More details regarding the position can be found in the following link. 
Application forms are available also through the link and applications are 
accepted only through the web-based system.


https://rekry.saima.fi/certiahome/open_job_view.html?did=5600=1=5396


Best regards,


Lari

__
Lari Lehtiö, PhD, Docent/Adjunct Professor
Biocenter Oulu
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
http://www.oulu.fi/biocenter/groups/lehtio
_


[ccp4bb] Postdoctoral and PhD student positions - Oulu, Finland

2017-06-26 Thread Lari Lehtiö
Dear all,


We have positions open in my group for a PhD student and for a postdoctoral 
researcher. The project focuses on structure and inhibition of 
ADP-ribosyltransferases.? Information on our team and projects can be found 
from our web pages: http://www.oulu.fi/biocenter/groups/lehtio


More details regarding the open positions can be found in the following links. 
Application forms are available also through the links and applications are 
accepted only through the web-based system.


Postdoctoral position:

https://rekry.saima.fi/certiahome/open_job_view.html?did=5600=1=4031=en


PhD student position:

https://rekry.saima.fi/certiahome/open_job_view.html?did=5600=1=4032=en



Best regards,


Lari





__
Lari Lehtiö, PhD, Docent/Adjunct Professor
Biocenter Oulu
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
http://www.oulu.fi/biocenter/groups/lehtio
_


[ccp4bb] NEXT course: “X-ray and neutron diffraction studies of macromolecules: from data collection to structures”

2017-01-22 Thread Lari Lehtiö
Dear All,

A reminder of the upcoming course we are organizing in Oulu. Please notice that 
we have extended the deadline for application to 19.2.2017.

This intensive course is organized from May-15 to May-19, 2017 at the Faculty 
of Biochemistry and Molecular Medicine, University of Oulu in Oulu, Finland. It 
is organized in the context of the iNEXT Horizon2020 project 
(http://www.inext-eu.org ), together with Diamond (Oxford, UK) and Biocenter 
Oulu. The course will include an introduction on the methods of protein 
crystallography (Rupp), neutron crystallography (Oksanen/Podjarny) and 
SAXS/SANS-approaches (Svergun).  Also data collection at synchrotrons 
(Thunnissen), new perspectives when using the new long-wavelength beamline at 
Diamond (Wagner) and when using XFEL-technology (Hajdu) will be addressed. 
Tutorials include the validation tools of the PDB-deposition server (Rupp), as 
well as data processing (DIALS, Waterman; XDS, Rower), experimental phasing 
(SHELX, Gruene), molecular replacement phasing (CCP4, Lebedev) and neutron 
structure refinement (Oksanen, Podjarny). Remote data collection (Diamond, 
Aller, Powell) of crystals from participating students is scheduled for the 
last day of the course. The course provides extensive opportunities for the 
students to work with the presented software in our linux class room and to 
interact with the expert teachers.

Students are encouraged to send crystals in advance, which will then be shipped 
to Diamond, for remote X-ray data collection. Students are also encouraged to 
bring their own raw X-ray data images which are difficult to process or their 
own X-ray data sets for which molecular replacement calculations have turned 
out to be difficult.

There is no registration fee and we aim to cover also the accommodation costs 
and meals of the students. Application for the course can be sent in January 
and the deadline is 19.02.2017. The course is aimed at PhD-students and 
postdocs working on structural biology projects using X-ray or neutron 
diffraction methods.  The application should include a motivation letter and a 
letter from the supervisor. Detailed information on how to apply, including a 
list of confirmed lectures and tutorials, is available at 
http://www.oulu.fi/biocenter/instruct-nac/courses/oulu .

On behalf of the local organisers,
Rik Wierenga and Lari Lehtiö?




__
Lari Lehtiö, PhD, Docent/Adjunct Professor
Biocenter Oulu
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
http://cc.oulu.fi/~llehtio/
_


[ccp4bb] Postdoc and PhD student positions

2015-05-18 Thread Lari Lehtiö
​Open positions in the laboratory of Lari Lehtiö at the Faculty of Biochemistry 
and Molecular Medicine and Biocenter Oulu,University of Oulu, Finland.


The research group focuses on structure, function and inhibition of 
ADP-ribosyltransferases (ARTDs/PARPs). We use protein X-ray crystallography, 
activity assays and complementing biophysical techniques to understand how the 
signaling enzymes work. We also use screening of compound libraries and 
structure-based design of specific inhibitors for the enzymes to be used as 
chemical probes as well as drug leads.

More information of our research is available on the web pages 
(http://www.oulu.fi/biocenter/groups/lehtio).


Postdoctoral researchers


We have 2 positions for postdoctoral researchers. One position is available 
immediately until 31.12.2016 with possible extension depending on funding. 
Second positions is for 1.9.2015 until 31.8.2018 with possible extension 
depending on funding.


We are looking for researchers holding a doctoral degree or soon to receive one 
and having interest in structural biology and drug discovery. Work includes 
cloning, expression, purification and characterization of recombinant proteins 
as well as structural studies using X-ray crystallography and small-angle X-ray 
scattering. Experience in protein characterization, medicinal chemistry or 
structural biology is considered beneficial.


The salary will be based on the demand level 5 of the salary system in Finnish 
Universities and includes a component based on personal performance.


The application should include 2 pdf files 1) a motivation letter (1 page) 
describing prior knowledge and interests 2) a complete CV containing contact 
information of two references.


Application should be sent to Lari Lehtiö by email (lari.lehtio(at)oulu.fi) 
with a subject line “Application for a Postdoctoral position”. First position 
is filled as soon as a suitable candidate is found. For the second position the 
applications are accepted until 14.6.2015.


PhD student


A position is available for a PhD student with funding currently available for 
three years. Position is available immediately and it will contain a trial 
period.


We are looking for a student holding a MSc degree and with interest in 
structural biology and drug discovery. Work includes cloning, expression, 
purification and characterization of recombinant proteins as well as structural 
studies using X-ray crystallography. The aim of the project is to develop 
selective inhibitors for human mono ADP-ribosyltransferases.


The salary will be based on the demand levels 2-4 of the salary system in 
Finnish Universities and includes a component based on personal performance.


The application should include 2 pdf files 1) a motivation letter (1 page) 
describing prior knowledge and interests 2) a complete CV containing contact 
information of two references.


Application should be sent to Lari Lehtiö by email (lari.lehtio(at)oulu.fi) 
with a subject line “Application for a PhD position”. Applications are accepted 
until 14.6.2015.



Best regards,


Lari


__
Lari Lehtiö, PhD, Docent/Adjunct Professor
Biocenter Oulu
Faculty of Biochemistry and Molecular Medicine
P.O.Box 5400
FIN-90014 University of Oulu
Finland
http://cc.oulu.fi/~llehtio/
_


Re: [ccp4bb] side chain density

2012-11-09 Thread Lari Lehtiö

Hi,

There has been quite a lot of discussion about this and I think  
different opinions exist. I would try to keep the side chains, if  
there is some evidence where they are. Otherwise I would just delete  
atoms and I would not mutate them to alanine.


http://www.mail-archive.com/ccp4bb@jiscmail.ac.uk/msg20437.html

Best regards,

Lari

__
Lari Lehtiö, PhD, Adjunct Professor
Biocenter Oulu
Department of Biochemistry
P.O.Box 3000
FIN-90014 University of Oulu
Finland
http://cc.oulu.fi/~llehtio/
_


Quoting Faisal Tarique faisaltari...@gmail.com:


Dear all

i have solved a structure ( at 2A resolution) whose Rwork and Rfree is 22
and 25 respectively..the Ramachandran plot shows 90% of the residues in the
most favorable region and with 6 residues in generously allowed and no
residues in disallowed region. But in some areas i can see density missing
for side chains ( in loop regions )..i have question do i need to mutate
them to alanine or leave them as such..The density fit analysis in COOT (
traffic light) showing those regions with side chain as red..

thanx in advance

Regards

Faisal
School of Life Sciences
JNU



Re: [ccp4bb] linux flavors

2011-02-24 Thread Lari Lehtiö

Hi,

Slightly deviating from the original thread perhaps: I am having
trouble with recent releases of Ubuntu on my Toshiba Satellite laptop,
mainly associated with ACPI. The internet is awash with discussions on
how to fix the problems with ACPI (fan speed, screen brightness etc).
None of the solutions that have been suggested, work for me. I still
run Ubuntu 8.04, which is ok, but all versions after that effectively
mean the screen brightness is stuck at one level and the fan either
runs on full speed or not at all. Other people in the lab have
reported similar problems with their laptop (various makes). Does
anyone know of a linux distribution where everything just works,
without having to go back to the dark ages of linux where multimedia
etc are not supported?

Thanks,

Johan


Gentoo?

http://www.gentoo.org/main/en/about.xml

~L~

__
Lari Lehtiö
Pharmaceutical Sciences, Department of Biosciences
Åbo Akademi University,
BioCity, FIN-20520 Turku
Finland
+358 2 215 4270
http://www.users.abo.fi/llehtio/
__


Re: [ccp4bb] Unexplained density

2010-04-30 Thread Lari Lehtiö

Hi,

Anomalous map might give you some idea if it can be zinc.

~L~

__
Lari Lehtiö
Pharmaceutical Sciences, Department of Biosciences
Åbo Akademi University,
BioCity, FIN-20520 Turku
Finland
+358 2 215 4270
http://www.users.abo.fi/llehtio/
__


Quoting Dr. STEPHEN SIN-YIN, CHUI chui...@hkucc.hku.hk:


Dear Daniel

Is the omit map for the model with and without the zinc ions   
possible to confirm

its existence? I am curious. What is the resolution of dataset?

stephen

Quoting Daniel Bonsor bon...@bbri.org:


Hello again

I currently have some unexplained density in my structure. As you can
hopefully see from the images (see file), the density is dumbbell shaped.
Whatever it is, it is coordinated by Asp and Glu residues. To me it looks
like each lobe is a ring structure.


The crystallization condition was:
6.5% PEG 8K, 10mM ZnSO4, 100mM sodium cacodylate pH 6.5, 100mM Am2SO4, 1%
glycerol, with 20% glycerol as cryo.
Protein was originally in 50mM Tris, 50mM NaCl pH 7.5.


I originally placed a single Zn at the center of each lobe. Though after
refmac, the Zn was displaced to one side. Two zincs in each   
dumbbell may have

worked, but I am dubious about two zinc atoms being 4A apart and there is
still some unexplained density. Are there any possible cyclization reactions
of Tris, cacodylate or glycerol may have undergone to explain the   
density? Or

is it simply a highly ordered water network? Or is there some other
explanation?

Thanks in advance

Dan




--
Dr. Stephen Sin-Yin Chui
Research Assistant Professor,
Department of Chemistry,
The University of Hong Kong, Pokfulam Road,
Hong Kong SAR, China.
Tel: 22415814 (Office), 22415818 (X-ray Diffraction Laboratory)




Re: [ccp4bb] Buried surface area (BSA) vs. oligomeric interface

2010-03-22 Thread Lari Lehtiö

Hi,

just a place I would perhaps start looking:
http://www.ebi.ac.uk/msd-srv/prot_int/picite.html

~L~

__
Lari Lehtiö
Pharmaceutical Sciences, Department of Biosciences
Åbo Akademi University,
BioCity, FIN-20520 Turku
Finland
+358 2 215 4270
http://www.users.abo.fi/llehtio/
__


Quoting Sollepura Yogesha yoge...@scripps.edu:


Dear All,
We found that our structure  is having  a large buried surface in   
its dimer interface (~18% as calculated by AREAIMOL). This dimer has  
 not been observed in earlier studies and right now we have less  
data  to support this strong interface formation. I am looking for   
some  literature which provide guidelines to understand the relation  
of  BSA or crystal contacts with oligomeric interfaces.


Any suggestion is highly appreciated

Thanks in advance
Yogi




Re: [ccp4bb] Protein crystallizes while concentration

2010-02-18 Thread Lari Lehtiö

Dear Rajkumar,

I would use dialysis buttons.
E.g. http://hamptonresearch.com/product_detail.aspx?cid=10sid=63pid=111

Put your protein to the button and seal it with a piece of dialysis  
membrane. Place this to a linbro plate (easy to look with a  
microscope), fill the well with low salt buffer and seal with a cover  
slip.


To make the diffusion slower, you can put the dialysis button inside a  
dialysis tubing with some high salt buffer and place this to a bigger  
volume of low salt buffer.



~L~

__
Lari Lehtiö
Pharmacy, Department of Biochemistry and Pharmacy
Åbo Akademi University,
BioCity, FIN-20520 Turku
Finland
+358 2 215 4270
http://www.users.abo.fi/llehtio/
__


Quoting E rajakumar e_rajaku...@yahoo.com:


Dear All
I am Rajkumar, working on the protein which has unusual behavior   
while concentration.


When I kept protein in 15 mM Tris 7.5, 150 mM NaCl and 5 mM DTT, the  
 solubility of the protein is decreases drastically and tend to   
crystallize while concentration.
Protein cannot be concentrated more than 3 mg/mL, however I noticed   
white turbid protein if I force to concentrate 3mg/mL. When I   
observed this white turbid solution under the microscope, I noticed   
shower of tiny protein crystals which are needle in shape.
I screened freshly purified protein (2.5 mg/mL) in different Hampton  
 and Qiagen screens, strangely none of the conditions gave the   
crystals.  I concentrated left over protein at 15oC at 3 mg/mL and   
kept in the 4oC for 4 days again I noticed shower of crystals.
This protein solubility is increased to ~20mg/mL when I kept in 15   
Tris 7.5, 400 mM NaCl, 5% Glycerol and 5 mM DTT, but did not   
crystallize while concentration and also after screening with   
Hampton and Qiagen screens.


My queries are
1. How do I get the crystals in the crystallization set up rather   
than while concentration, so that I can control the diffusion and   
finally nucleation?

2. Could anybody give me suggestions on seeding in this type of situation?
3. Any comments on reverse vapor diffusion for this type of protein   
are most welcome. So I can keep protein in high ionic strength (~400  
 mM NaCl)and diffuse against low Ionic strength or deionized water?   
Or any other protocol?

Any suggestions are well appreciated.
Thanking you in advance
Raj

E. Rajakumara
Postdoctoral Fellow  Strcutural Biology Program
Memorial Sloan-Kettering Cancer Center
New York-10021
001 212 639 7986 (Lab)  001 917 674 6266 (Mobile)


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Re: [ccp4bb] off topic: multiple structural sequence alignment

2010-01-12 Thread Lari Lehtiö

I ended up using multiprot and staccato recently
http://bioinfo3d.cs.tau.ac.il/MultiProt/

There is a server for multiprot, but I downloaded the applications. I  
still ended up doing quite a bit manual editing in filling the gaps in  
the structures etc.


I stumbled also over a link about the matter comparing different  
programs (by Dr Elaine Meng):

http://www.cgl.ucsf.edu/home/meng/grpmt/structalign-content.html

~L~

__
Lari Lehtiö
Pharmacy, Department of Biochemistry and Pharmacy
Åbo Akademi University,
BioCity, FIN-20520 Turku
Finland
+358 2 215 4270
http://www.users.abo.fi/llehtio/
__


Quoting Ronnie Berntsson r.bernts...@rug.nl:


Dear all,

A bit off the topic question perhaps.
I am trying to find a program which can do multiple structural   
sequence alignments. What I would like is a program which can take   
as input PDB codes (or files), and which will output a multiple   
sequence alignment in FASTA format with the full sequences of the   
supplied proteins intact. Preferably said server/program should be   
able to handle at least 20 input pdbs at once.
I've been looking around, but have so far failed to find a program   
which does this. If anyone knows of a program or server which could   
handle this, I would be very grateful.


Cheers,
Ronnie Berntsson



Re: [ccp4bb] anisotropic diffraction in refinement

2009-09-01 Thread Lari Lehtiö

There is a ellipsoidal truncation and scaling server you might want to try.

http://www.doe-mbi.ucla.edu/~sawaya/anisoscale/

~L~

__
Lari Lehtiö
Pharmacy, Department of Biochemistry and Pharmacy
Åbo Akademi University,
BioCity, FIN-20520 Turku
Finland
+358 2 215 4270
__


Quoting Justin Hall hallj...@onid.orst.edu:


Dear All;

I am working with a data set which is anisotropic. The resolution
limits are ~ 2.75 by 3.45 A.  The I have integrated (using Mosflm) the
data out to 2.75 A, the data therefore includes a mix of real (I/sig

1) and imaginary (I/sig ~1) data past the 3.45 A resolution bin.


I am concerned that the presence of the poor quality data in the outer
shells will cause my good data to 2.75 A resolution to be down weighted
in refinement.  Since anisotropic resolution limits do not seem to be
an option, are there other tools that would allow proper weighting for
this situation?

Cheers~

~Justin Hall
Oregon State University


Re: [ccp4bb] hydrogen bond between aspartate side chain and main chain carbonyl group?

2009-04-27 Thread Lari Lehtiö

Hi,

Not my structure, but noticed similar bond in glycerol dehydratase,  
when comparing structures. PMID: 16414072


pdb 1R9E and resid 506. (resolution 2.4 Å)

Buried rather hydrophobic environment and Asp make H-bonds to serine  
hydroxyl and carbonyl.


~L~

__
Lari Lehtiö
Pharmacy, Department of Biochemistry and Pharmacy
Åbo Akademi University,
BioCity, FIN-20520 Turku
Finland
+358 2 215 4270
__


Quoting b...@freesurf.fr:


Hi Frank,

such interactions are certainly possible, in particular if additional
H-bonding side chains are available to stabilize the arrangement. I'm not
aware of any examples involving main chain carbonyls, but for a discussion
of carbonyl-carbonyl side chain interactions see the following paper:

Flocco, M.M. and Mowbray, S.L. (1995) Strange Bedfellows: Interactions
between Acidic Side-Chains in Proteins, J. Mol. Biol. 254 96-105

Best wishes, Sebastiaan Werten.



- Original Message -
From: Frank Lee
To: CCP4BB@JISCMAIL.AC.UK
Sent: Saturday, April 25, 2009 7:47 AM
Subject: [ccp4bb] hydrogen bond between aspartate side chain and main
chain carbonyl group?

Hi,

In a new structure we observed a hydrogen bond between an aspartate side
chain and a main chain carbonyl group. Because both of them are
electronegative, I am puzzled.

My questions are: does this hydrogen bond make sense at all? any precedent
for such a hydrogen bond?

I would appreciate your help very much!
Frank