Re: [ccp4bb] [phenixbb] [ccp4bb] Phenix refine distorting a sidechain despite correct density

2020-12-03 Thread Igor Petrik
Thanks for the advice Pavel! I don't want to celebrate prematurely, but I just re-ran the same refinement in both the stable and in nightly 4070, and it _seems_ to be corrected in the nightly. Will let you know if it pops up again. - Igor Petrik, PhD On Thu, Dec 3, 2020 at 9:16 AM Pavel Afonin

Re: [ccp4bb] Phenix refine distorting a sidechain despite correct density

2020-12-03 Thread Igor Petrik
Thanks Nigel, I will put together the input and output file from my latest refinement and send them to you and Pavel later today. - Igor Petrik, PhD On Wed, Dec 2, 2020 at 9:46 PM Folmer Fredslund wrote: > Dear Igor > > There's a phenix bulletin board for question like this, which is where yo

Re: [ccp4bb] Phenix refine distorting a sidechain despite correct density

2020-12-02 Thread Pavel Afonine
Hi Folmer, I would choose to not do the real space refinement in phenix.refine during > the last rounds of refinement of a model, when sidechain positions are > essentially correct. > by design it is supposed to place and fit side chains as good as possible, satisfying both map fit and geometry c

Re: [ccp4bb] Phenix refine distorting a sidechain despite correct density

2020-12-02 Thread Folmer Fredslund
Dear Igor There's a phenix bulletin board for question like this, which is where you should post the question. ( I crosspost here) I would choose to not do the real space refinement in phenix.refine during the last rounds of refinement of a model, when sidechain positions are essentially correct

Re: [ccp4bb] Phenix refine distorting a sidechain despite correct density

2020-12-02 Thread Nigel Moriarty
Igor There is a Phenix BB for your Phenix related questions. You can subscribe here. http://www.phenix-online.org/mailman/listinfo/phenixbb In the meantime, please send the Phenix version and OS to myself and Pavel privately and I'm sure we can help. We may also need the inputs (privately, of co

[ccp4bb] Phenix refine distorting a sidechain despite correct density

2020-12-02 Thread Igor Petrik
I am refining a 1.71A X-ray structure with phenix refine. I have everything modelled in - ~150 residues in the ASU and a heme - and my R-work/R-free is 0.17/0.22. But when I went to deposit it, PDB pointed out that two of my sidechains have distorted geometries. One is a His, and looking at it in C