Re: [ccp4bb] AW: [EXTERNAL] [ccp4bb] refmac same residue different names

2019-02-13 Thread Clemens Vonrhein
Dear Herman, On Thu, Feb 07, 2019 at 10:26:09AM +, Herman Schreuder wrote: > I did understand your question correctly and (at least for ligands) > the procedure I and also Diana Tomchick described, worked. However, > I just did a test with both Refmac and Buster and it seems that > these

[ccp4bb] AW: [EXTERNAL] [ccp4bb] refmac same residue different names

2019-02-07 Thread Herman . Schreuder
Ed, I did understand your question correctly and (at least for ligands) the procedure I and also Diana Tomchick described, worked. However, I just did a test with both Refmac and Buster and it seems that these programs have now so far been perfected that “errors” like this cannot occur

Re: [ccp4bb] AW: [EXTERNAL] [ccp4bb] refmac same residue different names

2019-02-06 Thread Mark Wilson
I agree. We have encountered refinement problems similar to those Ed describes for models with mixtures of modified cysteine species, which is a fairly common occurrence. Best regards, Mark Mark A. Wilson Associate Professor Department of Biochemistry/Redox Biology Center University of Nebraska

Re: [ccp4bb] AW: [EXTERNAL] [ccp4bb] refmac same residue different names

2019-02-06 Thread Palm, Gottfried
The situation might not be so rare, if you consider 50% Lys and 50% Acetyl-Lys or other post-translational modifications. Gottfried On Wednesday, 06-02-2019 at 18:05 Diana Tomchick wrote: If you have the odd case where one residue (of the same number in the polypeptide chain) is a Leu and the

Re: [ccp4bb] AW: [EXTERNAL] [ccp4bb] refmac same residue different names

2019-02-06 Thread Diana Tomchick
If you have the odd case where one residue (of the same number in the polypeptide chain) is a Leu and the alternative residue is a Phe, then it would be ALEU and BPHE, both residues would have the same residue number, and reset the occupancies to fractions that sum to 1.0. Diana

[ccp4bb] AW: [EXTERNAL] [ccp4bb] refmac same residue different names

2019-02-05 Thread Herman . Schreuder
Dear Edwin, I do not know whether your question has been answered already, but the answer is simple: you have to define alternative conformations. Easiest is to generate them in coot with the “add alternate conformation” option in the right panel. You may have to delete the original unlabeled