Buz, This is something PyMOL didn't handle well until recently, but I think you can now prefix the minus sign with a backslash in order to force PyMOL to interpret the value numerically instead of as a range.
# create some negative residue identifiers load $TUT/1hpv.pdb alter chain A, resi=int(resi)-200 set seq_view # test selections indicate resi \-127 indicate resi \-136-\-129 A bit ugly, but it works! Cheers, Warren -- DeLano Scientific LLC Subscriber Support Services mailto:supp...@delsci.com -----Original Message----- From: pymol-users-boun...@lists.sourceforge.net [mailto:pymol-users-boun...@lists.sourceforge.net] On Behalf Of Buz Barstow Sent: Thursday, August 21, 2008 12:32 PM To: pymol-users@lists.sourceforge.net Subject: [PyMOL] Selecting Negative Residues Dear All, Does anyone know how to select residues with negative sequence numbers in Pymol? I have a protein molecule with two residues with negative sequence numbers (-2 and -1). When I issue the command: cmd.select('temp', 'resi -2 and name CA') Pymol selects the alpha carbons of residues -2 to +2. How can I tell Pymol that I don't want to select a range? Thanks, and all the best, --Buz ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ PyMOL-users mailing list PyMOL-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pymol-users
