25 Aug
2026
25 Aug
'26
11:34 a.m.
Dear ChimeraX staff, For some mmCIFs, ChimeraX displays bonds that are physically unrealistic. For example, if you take PDB 9S2E ChimeraX draws a bond between residue /IN:52 and and /IN:154 (see screenshot). The PDB mol viewer (https://www.rcsb.org/3d-view/9S2E) does not display this bond. I noticed that structures in PDB format don’t show these bonds, so this is probably due to some connectivity records in cif format. I also have only observed this in nucleic acids, not proteins. Is this a bug that could be addressed? Thanks a lot and best wishes, Matthias [image.png]