Hi Afshan, Just swap the (names of) the CD and CG atoms, no need for refinement. The CCP4 dictionary allows both chiralities for LEU and VAL, so Refmac won't detect the problem. The problem is still very real to many programs so it should be fixed.
Cheers, Robbie Joosten Date: Thu, 5 Jan 2012 02:46:30 -0800 From: afshan...@yahoo.com Subject: [ccp4bb] chirality problem To: CCP4BB@JISCMAIL.AC.UK Dear Users, I am facing difficulties to validate my structure according to PDB server. I have solved my structure and now want to submit in PDB but during validation process i have some chirality problem specially VAL and LEU amino acids there are total 18 amino acids which deviated from the chirality so how can i solve this problem. Any suggestion would be highly appreciated. Best Regards AFSHAN