From owner-chemistry@ccl.net Thu Aug 11 04:52:01 2011 From: "Gonzalo Jimenez Oses gonzalo.jimenez(a)unirioja.es" To: CCL Subject: CCL: Residue annotation in MOZYME Message-Id: <-45239-110811044953-25365-rJgIw2zR/3KJ03w7m2ylcQ _ server.ccl.net> X-Original-From: "Gonzalo Jimenez Oses" Date: Thu, 11 Aug 2011 04:49:50 -0400 Sent to CCL by: "Gonzalo Jimenez Oses" [gonzalo.jimenez^-^unirioja.es] Dear all, I have observed that MOPAC overrides the residue labels specified in the PDB files when they are used as inputs for MOZYME. For example, a Pro can be automatically changed into a Val after reading the PDB input. This has terrible consequences for the global charge computation. Of course, one can fix the carge manually, but this is not very convenient when processing dozens of PDB files in batch mode. The cause of these changes is very slight deviations from the "ideal" residue geometry (I have overriden this bug by just changing the XYZ coordinates of just one atom of the conflictive Pro). So, my question is: given that the residue labels are already specified in the PDB file, is there any way to override the automatic re-tagging of the residues before any MOZYME calculation? I have checked the documentation, but have not found anything. Thanks a lot, best regards, Gonzalo