Yes, I did try selecting atom numbers and it did work. Thanks. Rebecca ***************************** Rebecca Roberts, Ph.D. Assistant Professor, Department of Biology Coordinator, Biochemistry and Molecular Biology Ursinus College Collegeville PA 19426 phone: 610-409-3000 ext. 2665 fax: 610-409-3633 http://webpages.ursinus.edu/biology/newbiodept_web/index.htm -----Original Message----- From: Miguel [mailto:miguel at jmol.org] Sent: Monday, November 15, 2004 4:44 PM To: molvis-list at bioinformatics.org Subject: Re: [Molvis-list] no chain designation Rebecca wrote: > I've got a molecule that has a propeptide but there are no chain > designations in the file to distinguish this part of the molecule from > the rest. So, when selecting a region (I'm trying to select only the > first 62 amino acids that consistitute the propiece) PE selects the > first 62 and also the next 62 (because the residue numbering system > begins again from '1' at the '63rd' amino acid). Any ideas on how to > get around this when no chain designations are provided? I don't know what a propeptide is but ... you could try: select amino & 1-62 OR you could try selecting by atom numbers instead of by residue numbers: select atomno >= 1 & atomno < 999 # or whatever your atom numbers are Miguel _______________________________________________ Molvis-list mailing list Molvis-list at bioinformatics.org https://bioinformatics.org/mailman/listinfo/molvis-list