Hi Ryan and Blaine, In addition to the classification by residue identifiers, PyMOL looks for nucleic acid backbone atoms by name.
See: https://github.com/schrodinger/pymol-open-source/blob/master/layer3/Selector.cpp#L1393 ---------------------- } else if (found_o3star && found_c3star && found_c4star && found_c5star && found_o5star && (found_o3_bond || found_p_bond)) { mask = cAtomFlag_polymer | cAtomFlag_nucleic; ---------------------- Hope that helps. Cheers, Thomas > On May 18, 2019, at 12:26 AM, Mooers, Blaine H.M. (HSC) > <blaine-moo...@ouhsc.edu> wrote: > > Hi Ryan, > > I think that the manual page for polymer will answer your question clearly > > https://pymol.org/dokuwiki/doku.php?id=selection:polymer > > Best regards, > > Blaine > > Blaine Mooers, Ph.D. > Associate Professor > Department of Biochemistry and Molecular Biology > College of Medicine > University of Oklahoma Health Sciences Center > S.L. Young Biomedical Research Center (BRC) Rm. 466 > 975 NE 10th Street, BRC 466 > Oklahoma City, OK 73104-5419 > > ________________________________________ > From: Kung, Ryan [ryan.k...@uleth.ca] > Sent: Friday, May 17, 2019 4:46 PM > To: pymol-users@lists.sourceforge.net > Subject: [EXTERNAL] [PyMOL] Question about polymer selection criteria > > Hello, > > I have a question about how the pymol polymer.nucleic selection defines what > is nucleic? Is there a list of atom names that are required? Does it have to > actually be part of a polymer for the selection process to identify it? If > someone can help me understand this, that would be great. > > Thank you, > Ryan Kung > > _______________________________________________ > PyMOL-users mailing list > Archives: http://www.mail-archive.com/pymol-users@lists.sourceforge.net > Unsubscribe: > https://sourceforge.net/projects/pymol/lists/pymol-users/unsubscribe -- Thomas Holder PyMOL Principal Developer Schrödinger, Inc. _______________________________________________ PyMOL-users mailing list Archives: http://www.mail-archive.com/pymol-users@lists.sourceforge.net Unsubscribe: https://sourceforge.net/projects/pymol/lists/pymol-users/unsubscribe
