Hi everyone, I am currently doing a rigid-body refinement with a 3 A dataset using Refmac5. I would like to calculate a grouped B-factor for each rigid body (instead of an overall B-factor). Is there a way I can do this in Refmac? Perhaps a command line trick? I would also like to simultaneously refine TLS groups. Any help and/or insight is appreciated. Best regards, Jason Porta Graduate Student Dept. Biochemistry & Molecular Biology University of Nebraska Medical Center Omaha, NE 68198 402-559-5533