Hello Nigel,
phenix.fetch_pdb 4yz8; phenix.pdbtools 4yz8.pdb keep="(protein)" modify.output.file_name=4yz8-protein.pdb stop_for_unknowns=False
Might the actual presence of a peptide bond (in the same chain, at least) be a reasonable requirement?
W.


On Fri, Feb 3, 2017 at 3:01 PM, Nigel Moriarty <nwmoriarty@lbl.gov> wrote:
Wolfram

I can understand your surprise. I believe it's because the Monomer Library contradicts the Chemical Components and calls SAM an L-peptide. Can you describe how you are selecting so I can debug easily. 

Cheers

Nigel

---
Nigel W. Moriarty
Building 33R0349, Molecular Biophysics and Integrated Bioimaging
Lawrence Berkeley National Laboratory
Berkeley, CA 94720-8235
Phone : 510-486-5709     Email : NWMoriarty@LBL.gov
Fax   : 510-486-5909       Web  : CCI.LBL.gov

On Fri, Feb 3, 2017 at 11:42 AM, wtempel <wtempel@gmail.com> wrote:
Hello all,
in my hands and to my surprise, PHENIX atom selections such as "protein" or "peptide" would include a co-factor like SAM. Did others notice that also? Is this behavior what most users would want or even expect?
Best regards.
Wolfram Tempel

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