[ccp4bb] postdoc advertisement

2010-09-17 Thread Qun Wan
Hi, There is a postdoc position available in Chris Dealwis lab in Case Western Reserve University, Cleveland, OH, USA. If anyone is interested, please see the attached mail. postdoc.doc Description: MS-Word document

Re: [ccp4bb] Molecular replacement question

2010-09-17 Thread Donnie Berkholz
On 09:50 Tue 14 Sep , Dirk Kostrewa wrote: > I would spend some time in improving the search model, first. If there > are more than one possible search molecules in the PDB, I usually do a > structural alignment (ssm superposition) to get an idea about the > flexibility of the search molecul

[ccp4bb] SIFTS mapping files between PDB and UniProt, Pfam, EC, CATH, SCOP, GO, etc. available from PDBe

2010-09-17 Thread Gerard DVD Kleywegt
The Protein Data Bank in Europe (PDBe; http://pdbe.org/) is pleased to announce the "Structure Integration with Function, Taxonomy and Sequence" (SIFTS) initiative, a close collaboration between PDBe and UniProt, that aims to improve the integration of the structural database and other bioinform

Re: [ccp4bb] Deposition of riding H: R-factor is overrated

2010-09-17 Thread Kendall Nettles
Very interesting discussion. I wonder if the "inexperienced user" of PDB really exists? I don't know anyone off-hand who would really make use of information from hydrogen positions but not understand the issues. Although I hear they have been sighted in the Everglades http://en.wikipedia.o

[ccp4bb] Max F. Perutz International PhD Program in Vienna

2010-09-17 Thread Kristina Djinovic Carugo
Dear all, I would like to bring to your attention the call of the Max F. Perutz International PhD Program, which covers a broad range of areas dedicated to exploring life at the cellular, molecular and atomic level. More details and information on how to apply can be found here: http://www.proj

Re: [ccp4bb] Deposition of riding H: R-factor is overrated

2010-09-17 Thread Quyen Hoang
As a relatively inexperienced scientist, I find this discussion fascinating. I wonder if NMR and EM people are also worried about depositing enough "modeled info" to allow back calculation of data. Regarding the original discussion of whether to deposit riding hydrogens used in the refineme

Re: [ccp4bb] Deposition of riding H: R-factor is overrated

2010-09-17 Thread Pavel Afonine
Dirk, - Imagine a (not very uncommon, unfortunately) situation when someone obtains the final model and Fcalc, and then, right before the PDB deposition does a final check in Coot, and moves/removes a few atoms (a few waters, or instance) here and there. Or may be does a real-space fit of a

Re: [ccp4bb] Deposition of riding H: R-factor is overrated

2010-09-17 Thread Ian Tickle
> Oh, goodness, I see: even here, we would need clear rules what the > calculated structure factors are, which weights are were, which bulk solvent > correction was applied ... a maze, too! Fortunately the X-ray & restraint weights/target values are not an issue here: varying them changes the refi

Re: [ccp4bb] Deposition of riding H: R-factor is overrated

2010-09-17 Thread Dirk Kostrewa
Dear Ian, Am 17.09.10 12:30, schrieb Ian Tickle: Dirk Personally I wouldn't make use of the deposited Fcalcs, I would insist on having the refined model, not only for the reasons Pavel gave, but also because it's never clear which mathematical model was used to produce the deposited Fcalcs. T

Re: [ccp4bb] Deposition of riding H: R-factor is overrated

2010-09-17 Thread Ian Tickle
Dirk Personally I wouldn't make use of the deposited Fcalcs, I would insist on having the refined model, not only for the reasons Pavel gave, but also because it's never clear which mathematical model was used to produce the deposited Fcalcs. There are 2 problem areas (at least 2 I can think of r

Re: [ccp4bb] Deposition of riding H: R-factor is overrated

2010-09-17 Thread Dirk Kostrewa
Hi Pavel, Am 16.09.10 17:56, schrieb Pavel Afonine: Hi Dirk, so, wouldn't be the deposition of the final model's Fcalc, Phic (and their weights) along with the final coordinates be the best solution? The final Fcalc are our best model and can be used to reproduce the final statistics (whi

Re: [ccp4bb] List of commonly used cryoprotectants and buffer molecules

2010-09-17 Thread Robbie Joosten
Dear Duangrudee, Thank you for the useful list. Keep in mind however, that the HET codes are from before the PDB remediation and some of them are now obsolete or (even worse) refer to a different compound. Cheers, Robbie Joosten > Date: Fri, 17 Sep 2