Re: [chimerax-users] label_seq_id in mmcif files for Chimera

Hi Tom, I don't want to continue it for too long, but I need to comment on this:

That documentation says it is used by the 60 mmCIF tables I copied below -- if you don't included it then none of those tables can refer to a specific residue.

They can - by using different identifiers, the ones inherited from the PDB format. Moreover, if the residue that you refer to is HOH you have to use different identifiers, because label_seq_id is null (.) for ligands and waters. It cannot be used to refer to a specific water molecule. Marcin