Eleanor Dodson wrote: > ... Many of these are unlikely, and you may well correct them when > rebuilding. > However the pdb file output by COOT will retain the CISPEP records.. > You need to check and edit these yourself.. For the record, I believe that this is no longer the case. Coot will only write CISPEP records for real CISPEPS (|omega| < 90). (Thanks to Eugene Krissinel who added support in mmdb so that Coot could do this). Paul.