Re: [ccp4bb] Intermolecular interactions

2012-01-23 Thread Eleanor Dodson
You can use Ncont or distang to get all contacts then farm the output for ones you want.. By N O ansd C do you mean main chain atoms only or all such links? I am a great grep expert to do things such as this. Eleanor On 01/22/2012 06:47 PM, REX PALMER wrote: Can anyone recommend a program

Re: [ccp4bb] protein structure for high schoolers

2012-01-23 Thread Nadir T. Mrabet
I would suggest MolProbity along with KiNG (on Firefox!) would be most appropriate (http://kinemage.biochem.duke.edu/). HTH, Nadir Pr. Nadir T. Mrabet Structural Molecular Biochemistry N-gere - INSERM U-954 Nancy University, School of Medicine 9, Avenue de la Foret de Haye, BP 184 54505

[ccp4bb] Building Coot with SSM

2012-01-23 Thread Dale Tronrud
Hi, I'm having trouble building Coot on a Gentoo system. When I try to perform a SSM overlay I am told that I need to build the program with libmmdbssm. I can't find a Gentoo package that provides libmmdbssm but there is a libmmdb and a libssm. When configure runs I'm told checking for

[ccp4bb] Problem with getting Rfree and Rf down

2012-01-23 Thread Sam Arnosti
Hi every one I have some crystals in the space group P3121. I collect 180 frames of data. My crystals do not diffract better than at most 2.0 angstrom, but the Rf barely goes below 23%, and Rfree also remains somewhere between 28-33%. I have tried to refine my data as much as I can. I do not

Re: [ccp4bb] Problem with getting Rfree and Rf down

2012-01-23 Thread Ed Pozharski
These R-values are reasonable: http://xray.bmc.uu.se/gerard/supmat/rfree2000/plotter.html On Mon, 2012-01-23 at 21:48 +, Sam Arnosti wrote: Hi every one I have some crystals in the space group P3121. I collect 180 frames of data. My crystals do not diffract better than at most 2.0

Re: [ccp4bb] Problem with getting Rfree and Rf down

2012-01-23 Thread Yuri Pompeu
Hi Sam, some obvious questions: 1-Space group right? ( i´d say so from your R values...) 2-Is your data good throughout all of the 180 frames? whats Rsym if take only 100? 3-how good/complete is model? Missing parts, residues, base pairs?? 4-evaluate your refinement strategy... HTH

[ccp4bb] writing scripts-off topic

2012-01-23 Thread Yuri Pompeu
Hello Everyone, I want to play around with some coding/programming. Just simple calculations from an input PDB file, B factors averages, occupancies, molecular weight, so forth... What should I use python,C++, visual basic? thanks

Re: [ccp4bb] writing scripts-off topic

2012-01-23 Thread Ethan Merritt
On Monday, 23 January 2012, Yuri Pompeu wrote: Hello Everyone, I want to play around with some coding/programming. Just simple calculations from an input PDB file, B factors averages, occupancies, molecular weight, so forth... What should I use python,C++, visual basic? What you describe

Re: [ccp4bb] writing scripts-off topic

2012-01-23 Thread Pavel Afonine
Hi Yuri, for example, you can use cctbx for this. Using cctbx you can do somethings as simple as b-factor statistics (see example below) or as complex as write your own refinement program (phenix.refine can serve as an example). Example: compute min/max/mean B-factor for all atoms and for CA

Re: [ccp4bb] writing scripts-off topic

2012-01-23 Thread Jens Kaiser
Yuri, I second everythig Ethan Merritt said, but would add: awk is easier and as functional as Perl for quick and dirty projects. Once you need Perl's complexity, you're probably better off moving to Python or a compiled language; Perl is powerful, but it allows you to do really dirty coding;

Re: [ccp4bb] writing scripts-off topic

2012-01-23 Thread Bart Hazes
On 12-01-23 09:59 PM, Ethan Merritt wrote: On Monday, 23 January 2012, Yuri Pompeu wrote: Hello Everyone, I want to play around with some coding/programming. Just simple calculations from an input PDB file, B factors averages, occupancies, molecular weight, so forth... What should I use

Re: [ccp4bb] writing scripts-off topic

2012-01-23 Thread James Stroud
On Jan 23, 2012, at 9:46 PM, Yuri Pompeu wrote: Hello Everyone, I want to play around with some coding/programming. Just simple calculations from an input PDB file, B factors averages, occupancies, molecular weight, so forth... What should I use python,C++, visual basic? thanks Python