Re: [ccp4bb] Puzzling Structure

2013-04-14 Thread Robbie Joosten
Hi Martyn, >I think the question is where the error was made - seeing the uploaded file > would clear this up. But it seems unlikely to me that the depositor saw a huge > R factor discrepancy at the end of refinement and just blithely uploaded it. > So scenario 3 :- > PDB : we cannot reproduce

Re: [ccp4bb] Puzzling Structure

2013-04-14 Thread Pavel Afonine
Hi Robbie, >Which seems a sort of reasonable attitude to me. > Not quite, the depositor has to give, i.e. type, the space group what I don't get is why one needs to type in this information if it is already present in both, model and data files? Any human typing is typo prone. Ideally depos

Re: [ccp4bb] Puzzling Structure

2013-04-14 Thread Edward A. Berry
Robbie Joosten wrote: Hi Martyn, I think the question is where the error was made - seeing the uploaded file would clear this up. But it seems unlikely to me that the depositor saw a huge R factor discrepancy at the end of refinement and just blithely uploaded it. So scenario 3 :- PDB : we

[ccp4bb] Angle restraints

2013-04-14 Thread Kavyashree Manjunath
Dear users, Validation of a structure showed a deviation in the angle between atoms NH1-CZ-NE and NH2-CZ-NE in the arginine residue. Several trials of modification of the orientation failed to solve this problem. I also confirmed by deleting the side chain and refining, it confirmed the presence o

Re: [ccp4bb] Angle restraints

2013-04-14 Thread Robbie Joosten
Hi Kavya, Which validation program did you use? How big is the deviation (in sigma values)? Is it the only outlier? What is your overall bond angle rmsZ? Using external restraints is a bit over the top here, especially if it is the only outlier. If your rmsZ is high (close to or over 1) then y