Hi, > FormatConverter would probably have worked on the complete file OK. I'd be willing to say 'almost certainly' in this respect. Anyway also note that with the FormatConverter the PDB import is only valid for full official PDB files (with header), because it also picks up sequence, author, secondary structure, ... information. If, on the other hand, you have a 'PDB-like' file without header, try the 'pseudoPdb' import, where you can also set the naming system relevant for that file. It will get the sequence from the ATOM records in this case. Bye, Wim ---------------------------------------------------------------------- Wim Vranken [log in to unmask] Macromolecular Structure Database (MSD) group European Bioinformatics Institute (EMBL outstation) Wellcome Trust Genome Campus Cambridge CB10 1SD, UK Tel: +44-1223-494682 Fax: +44-1223-494487 ----------------------------------------------------------------------