Hi, I had the same problem once. Some chemistry programs are not really good at exporting to pdb. Check the file format definition of pdb files, here: ftp://ftp.wwpdb.org/pub/pdb/doc/format_descriptions/Format_v33_A4.pdf Most interesting for you is probably pp. 174. Also make sure, there is an "END" at the end. It might help, if you send a link to the ligand file.
Cheers, Johannes 2017-03-30 19:41 GMT+02:00 Paul Emsley <pems...@mrc-lmb.cam.ac.uk>: > On 30/03/17 14:59, chemocev marker wrote: > >> Hi >> > > Hi. > > I have model of ligand molecule and it does not open in coot. Its not a >> crystal structure. I can view it in the pymol or chimera but not in the >> coot. It gives error that it does not have any space group information. Is >> there is a way to open it in coot. >> >> > If there is not a CRYST1 card in your pdb file, then Coot will warn you > that your molecule does not have symmetry. It is merely a warning, not an > error. > > If coot can't read the pdb file it's likely (it seems to me) that it's not > actually a (specifications-compliant) pdb file. Coot should give you an > error about any line that it particularly doesn't like. > > > Paul. >
