Re: [ccp4bb] high B factor

2018-11-08 Thread Oliviero Carugo
Dear Anandhi, you might be interested in PMID: 29752562. BW, Oliviero On 09.11.2018 01:30, Anandhi Anandan wrote: Hello everyone, I am trying to solve the structure of a protein with a bound ligand at 2.65 A resolution. XDS was used for data reduction, phaser-MR for molecular replacement a

[ccp4bb] high B factor

2018-11-08 Thread Dale Tronrud
Hi, The "B factors" reflect the rapidity of the decrease in intensity of scattering with increasing resolution. The scattering of a crystal becomes unmeasurable at a lower resolution if its intensities drop faster. This results in a connection between the resolution of a data set and the aver

[ccp4bb] high B factor

2018-11-08 Thread Anandhi Anandan
Hello everyone, I am trying to solve the structure of a protein with a bound ligand at 2.65 A resolution. XDS was used for data reduction, phaser-MR for molecular replacement and Phenix for refinement. The refinement was done with the default settings ( individual B factors, occupancy and TLS

Re: [ccp4bb] CC work / free

2018-11-08 Thread Georg Mlynek
Dear Frank, pdb_redo webserver does. However you have to cheat to provoke it: The resolution remark in the PDB has to be 0.10A beyond what it was used before. You can use also use the command line version of pdb-redo to tweak settings for your calculation (the expert option). However it woul

Re: [ccp4bb] transform NMR ensemble with pdbset

2018-11-08 Thread KAUSHIK H.S.
On Thursday, 8 November, 2018, 3:56:39 PM GMT, Pavel Afonine wrote: Perhaps phenix.pdbtools model.pdb rotate=... translate=... which should work with any PDB or mmCIF file. I couldn't figure out what angles goes as input for "rotate=" and "translate=" option of the phenix.pdbtools. 

Re: [ccp4bb] CC work / free

2018-11-08 Thread Frank von Delft
Does any refinement software automatically do the CC* resolution exploration ("paired refinement") that Kay did in the original paper?  Now that /would/ be fantastically useful. On 08/11/2018 12:44, Pavel Afonine wrote: Clément, I'm guessing this is because it isn't clear what CCwork/CCfree c

[ccp4bb] Advice on Cryo-Synchrotron use during early 1990s HIV Protease Inhibitor development

2018-11-08 Thread David Haas
Hi, I am studying how HIV-1 Protease Inhibitors were developed so rapidly, 3-5 years vs. normal 10-15 years, enabling the HAART Drug Therapy to be introduced in 1996?    Can you suggest articles or contacts on how /_cryocrystallography_/ (with synchrotrons) accelerated the first HIV Protease

Re: [ccp4bb] transform NMR ensemble with pdbset

2018-11-08 Thread Pavel Afonine
Perhaps phenix.pdbtools model.pdb rotate=... translate=... which should work with any PDB or mmCIF file. Pavel On Thu, Nov 8, 2018 at 11:36 PM Tim Gruene wrote: > Dear Kaushik, > > you could try moleman2 from the Uppsala Software Factory, > http://xray.bmc.uu.se/usf/moleman2_man.html - maybe

[ccp4bb] EMBL Workshop "Cryo-EM in Industry & Academia", Heidelberg, 6-8 February 2019

2018-11-08 Thread Christoph Mueller
Dear Colleagues, We would like to draw your attention to the workshop "Cryo-EM in Industry & Academia", that we are organizing at EMBL Heidelberg, 6-8 February 2019. The workshop will focus on success stories and new technologies, but also on challenges industry is facing using cryo-EM. The w

Re: [ccp4bb] transform NMR ensemble with pdbset

2018-11-08 Thread Tim Gruene
Dear Kaushik, you could try moleman2 from the Uppsala Software Factory, http://xray.bmc.uu.se/usf/moleman2_man.html - maybe it keeps those cards in the PDB file. Best, Tim On 11/8/18 4:23 PM, KAUSHIK H.S. wrote: > Hello, > > I want to transform (rotate+translate) structures determined by NMR. 

[ccp4bb] transform NMR ensemble with pdbset

2018-11-08 Thread KAUSHIK H.S.
Hello, I want to transform (rotate+translate) structures determined by NMR.  I tried using pdbset from the commandline.  The program seems to remove "MODEL" and "TER" lines from the coordinate file.  Is there a way to make pdbset retain these lines? or am I missing something obvious? I could spl

Re: [ccp4bb] CC work / free

2018-11-08 Thread Pavel Afonine
Clément, I'm guessing this is because it isn't clear what CCwork/CCfree can tell you that Rwork/Rfree can not. Needless to say we all more or less have a good idea about what the ok values for Rwork, Rfree and Rfree-Rwork (as function of resolution) while it is much less clear (to me at least) when

Re: [ccp4bb] CC work / free

2018-11-08 Thread Robbie Joosten
Hi Clement, Refmac actually does write out CCwork and CCfree out in its log files, so you can already check to see whether this you can use these metrics as you propose. We use these values in PDB-REDO to do paired refinement. IMO this is a better way of finding a high-resolution cut-off than g

[ccp4bb] CC work / free

2018-11-08 Thread Clement Degut
Hi all, This probably have already be discussed, but can't find trace of it : Is there any reason I am not aware of that refinement software (thinking of both phenix and refmac) do not output CC work / free ? We all accepted CC 1/2 for resolution cut (whether it's 30 or 10 %) which tend to lead to

[ccp4bb] Instruct Biennial Structural Biology Conference

2018-11-08 Thread Claudia Alen Amaro
Dear All Registrations are now open for the Instruct Biennial Structural Biology Conference to take place in Alcalá de Henares (near Madrid) 22-24 of May 2019. Confirmed speakers includes: Sjors Scheres, Julia Mahamid, Eva Pereiro, Andrej Sali, Teresa Carlomagno, Alex de Marco, Dave Stuart an