[ccp4bb] Docking models into low-res SAD map

2013-09-18 Thread Oliver Clarke
Hi all, Can anyone recommend software to dock previously solved domains into a (very) low-resolution experimentally phased map? I am working on a rather marginal case where this would be useful - very large assembly (500kDA per ASU), native goes to 6.9A, and the best derivative goes to 8A

[ccp4bb] Docking models into low-res SAD map - summary

2013-09-23 Thread Oliver Clarke
Many thanks for all the replies - I haven't yet tried all of them, but they all look worth following up on, much food for thought here: * Several people suggested SITUS COLORES, which I shall certainly try and had not heard of until now. * The program ESSENS, from the Uppsala software factory,

[ccp4bb] CPRODRG segfault on Mac OS X 10.9,

2013-11-25 Thread Oliver Clarke
Hi all, I have recently been trying to use the LIDIA ligand-viewer of Coot, which calls cprodrg. I am running CCP4 6.4.0 with all the latest updates on a Macbook Air (mid-2012 model) with OS X 10.9 installed and the latest nightly build of coot (r4833). Unfortunately, when I run cprodrg

Re: [ccp4bb] CCP4BB Digest - 17 Nov 2012 to 18 Nov 2012 (#2012-327)

2012-11-18 Thread Oliver Clarke
I had exactly the same thing happen this year to a 2008 macbook pro. Computer still worked while attached to power but unsurprisingly the battery did not work after that. On Nov 18, 2012, at 7:00 PM, CCP4BB automatic digest system lists...@jiscmail.ac.uk wrote: There are 8 messages totaling

[ccp4bb] Lysine methylation for proteins containing disulfide bonds?

2010-04-13 Thread Oliver Clarke
or denaturation. Does anyone have any experience with reductive methylation of disulfided proteins, or know of any references describing the same? Thanks in advance, Oliver Clarke. __ The information in this email is confidential

[ccp4bb] HOLE program availability

2014-08-07 Thread Oliver Clarke
Dear all, Apologies for the non-CCP4 related post, but does anyone know where the HOLE program for mapping the conduction pathways of ion channels may be obtained from these days? Preferably in a form that may be run on Mac or Linux systems. It no longer appears to be available from the Sansom

Re: [ccp4bb] Add water in the symmetry center?

2014-08-11 Thread Oliver Clarke
Dear Bing, My best guess is that these are artefacts due to the increased noise level at special positions (in your case a sixfold increase - see for example: http://scripts.iucr.org/cgi-bin/paper?S0365110X66000264). I agree with your assessment that it is best to leave such peaks unmodelled

Re: [ccp4bb] Help with importing density fit bar plots from Coot

2014-09-02 Thread Oliver Clarke
Dear Amit, I am not aware of an easy way to do this using Coot. However, if you run the Comprehensive validation tool in Phenix, it will generate a similar real-space correlation plot automatically, and the raw data for that plot can be exported (there is an option to save results to file).

Re: [ccp4bb] Consensus on modeling unidentifiable lipids and detergents in membrane protein structures?

2014-11-07 Thread Oliver Clarke
Thanks Nat, this is exactly what I was looking for and it makes perfect sense! To make this more convenient when one has many unidentified densities of varying lengths, I've written a little extension for Coot that generates a new UNL residue with a specified number of carbons, makes restraints

Re: [ccp4bb] Consensus on modeling unidentifiable lipids and detergents in membrane protein structures?

2014-11-07 Thread Oliver Clarke
My apologies - there was an error in that script, I forgot to delete prodrg droppings - this one is better: menu=coot_menubar_menu(Custom) def make_alkyl_chain(): def make_alkyl_chain_length_n(n): smiles_string=int(n)*c new_molecule_by_smiles_string(smiles_string,smiles_string)

Re: [ccp4bb] Gadolinium complexes- phosphate buffer

2015-05-18 Thread Oliver Clarke
Dear Isa, Do you have any cysteines? I assume so given you mention class B metals... If so, and you have a ready supply of relatively isomorphous crystals, I would consider giving native SAD a go, collecting datasets from 5-10 (or however many you need) datasets at a reasonably low energy (say

[ccp4bb] COMPPA symposium registration deadline May 1!

2018-04-26 Thread Oliver Clarke
and/or submit an abstract for a poster/short talk: https://www.comppaa.org/comppaa-symposium-2018 See below for a list of invited speakers with provisional titles - I think the meeting is shaping up very nicely, and we’d all love to see you there! Cheers, Oliver Clarke Radu Aricescu: Human GABAA receptor

[ccp4bb] COMPPÅ symposium - register now!

2018-04-04 Thread Oliver Clarke
Hi all, The deadline to register for the COMPPÅ symposium (covering production, structure determination, functional analysis and engineering of membrane proteins) is coming up in less than a month! Take a look at the attached flyer for confirmed speakers - I think it’s a pretty top notch