[gmx-users] IN4 molecule type error

Mohammed Kamal mohkam978 at hotmail.com
Sun Feb 1 11:11:11 CET 2009

You have to include the .itp file that you have obtained from PRODRG in the topology file. Be sure that you have changed the extension of the .itp file that you have obtained from the PRODRG server from .ITP to .itp!!

> Date: Fri, 30 Jan 2009 20:57:28 +0530
> From: aswathys at amritapuri.amrita.edu
> To: gmx-users at gromacs.org
> Subject: [gmx-users] IN4 molecule type error
> Dear Gromacs users,
> I am a new user of gromacs. I was trying the Enzyme- Drug complex tutorial for a test run and i have ended up with following error. Please try to help me
> creating statusfile for 1 node...
> Back Off! I just backed up mdout.mdp to ./#mdout.mdp.90#
> checking input for internal consistency...
> calling /usr/bin/cpp...
> TEST1/trp.top:12:9: error: #include expects "FILENAME" or <FILENAME>
> cpp exit code: 256
> Tried to execute: '/usr/bin/cpp  -I/usr/local/gromacs/share/top -DFLEXIBLE TEST1/trp.top > gromppVEFM2b'
> The '/usr/bin/cpp' command is defined in the .mdp file
> processing topology...
> Generated 1284 of the 1485 non-bonded parameter combinations
> Excluding 3 bonded neighbours for Protein_A 1
> Cleaning up temporary file gromppVEFM2b
> Fatal error: No such moleculetype IN4
> Can you please tell me what could be the reason for this? Please help me.
> Thanks in advance,
> Aswathy
> Amrita School of Biotechnology
> Dept. Biotechnology
> Ext. 3108
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