Re: [ccp4bb] Phaser and Molrep gave different solutions

2011-07-25 Thread Hubing Lou
Hi, Thanks for those who replied to this thread. I have been trying all the means that people suggested: search protein alone, DNA alone. However, both not working out. One thing Ray Brown suggested "MR works if the molecules have identical sequences". So I just played around with the following wa

Re: [ccp4bb] Phaser and Molrep gave different solutions

2011-07-25 Thread ccp4
That looks very hopeful. Do you know how the two molecules are related to each other? Do they form a dimer or have some interesting relationship? I would keep on improving the model - possibly use COOT to average the density and build into that for a start. I presume there are still side chains to

Re: [ccp4bb] how to estimate the error of unit cell parameters

2011-07-25 Thread harry powell
Hi In iMosflm, check the bottom line of the display in the "Cell Refinement" task at the end of refinement (there are three lines there - initial cell (i.e. before refinement), final cell (after refinement has finished) and "std dev" (the standard deviation determined from the refinement)

Re: [ccp4bb] fink unofficial fix for OSX 10.7 (Lion)

2011-07-25 Thread William G. Scott
On Jul 22, 2011, at 4:24 AM, Xiaoguang Xue wrote: > I noticed that the Fink repository will not run on the Lion system All the debian utilities work (as does the crystallography software), so it is just the fink perl wrapper script itself that doesn't work. Here is a cheap and easy, but unoffic

[ccp4bb] XDS problem: REMOVE.HKL ignored?

2011-07-25 Thread Engin Özkan
Hi all, After about a year of not working with XDS, I was a little surprised to see that adding a REMOVE.HKL file to the current directory and running CORRECT does not remove outliers. I still see the same reflections reported at the end of my new CORRECT.LP file and I have grepped the XDS_ASCI

[ccp4bb] Postdoctoral position at the University of Washington - Seattle

2011-07-25 Thread Ethan Merritt
A postdoctoral position is available immediately in the group of Ethan Merritt at the University of Washington - Seattle. This project involves the structure-based design and development of drugs targeting disease caused by eukaryotic parasites. It combines crystal structure determination done i

[ccp4bb] Non-crystallography symmetry operator

2011-07-25 Thread zhang yu
Hi, Does any one know which software could calculate and output non-crystallography symmetry operator? I am working on a structure with two molecules in one ASU, and two identical subunits in each of one molecule. I would like to know the non-crystallography operator of the two molecules, and al

Re: [ccp4bb] Non-crystallography symmetry operator

2011-07-25 Thread Ed Pozharski
On Mon, 2011-07-25 at 13:24 -0400, zhang yu wrote: > which software could calculate and output non-crystallography symmetry > operator? LSQKAB, SUPERPOSE - there are other options, of course -- Oh, suddenly throwing a giraffe into a volcano to make water is crazy?

[ccp4bb] Molrep and Coot bugs

2011-07-25 Thread Soisson, Stephen M
Hello all- (Paging Paul and Alexei) I recently came across a difficulty in Coot and Molrep in parsing PDB files containing insertion residues of the type where the residue number is the same but with an A, B, etc appendage. For example, PDB file 2CMR has several instances of the following type:

Re: [ccp4bb] Non-crystallography symmetry operator

2011-07-25 Thread zhang yu
Thanks for all the reply. I am able to use "phenix.find_ncs" find NCS operators for all the chains. But it doesn't give a NCS matrix between whole molecules in ASU. Is that right or I missed something? In "SUPERPOSE" of CCP4, How to ask the program to calculate the NCS operator? It asks me to inpu

Re: [ccp4bb] Phaser and Molrep gave different solutions

2011-07-25 Thread Phoebe Rice
My favorite test for truth in molecular replacement solutions is whether or not the map shows density for something that you know about but the computer doesn't. Take out a base pair or two, or delete some nice fat side chains, and see if they still show up in the density when you use that mode

Re: [ccp4bb] XDS problem: REMOVE.HKL ignored?

2011-07-25 Thread Florian Schmitzberger
Hi Engin, I encountered the same issue a couple of months ago. As I understand, the REMOVE.HKL file will only be used if you specify the spacegroup and unit cell in the XDS.INP file. Cheers, Florian On Jul 25, 2011, at 1:14 PM, Engin Özkan wrote: Hi all, After about a year of not worki

Re: [ccp4bb] XDS problem: REMOVE.HKL ignored?

2011-07-25 Thread Engin Özkan
Thank you, Florian! That did it. This should be included in the docs. Engin On 07/25/2011 01:23 PM, Florian Schmitzberger wrote: Hi Engin, I encountered the same issue a couple of months ago. As I understand, the REMOVE.HKL file will only be used if you specify the spacegroup and unit cell i