[gmx-users] Error in topology file

s lal badshah shahbiochemist at yahoo.com
Wed Apr 16 12:11:42 CEST 2008

Dear Experts,
Hi ! I am doing simulation of cholera toxin, one with GTP( guanosine triphosphate) and other without it.The without GTP MD simulation I have done, now I started the other and when I used the pdb2gmx command on pdb file it says:
Program pdb2gmx, VERSION 3.3.1
Source code file: resall.c, line: 438

Fatal error:
Residue 'GTP' not found in residue topology database

Earlier this already happen so I left that and was started the pdb having GTP removed but this time it is necessary for me.Should I use prodrg server or some thing else.
Hoping for guidance.
Lal badshah.

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