On 5/6/15 7:55 AM, Urszula Uciechowska wrote:

Hi,

I am trying to run pdb2gmx by using:

pdb2gmx -f COM-oH.pdb -o COM-oH.gro -p COM-oH.top -ignh -water tip3p -ter

however I am getting a fatal error:

-------------------------------------------------------
Program pdb2gmx, VERSION 4.5.3
Source code file: pgutil.c, line: 99

Fatal error:
Atom C not found in residue seq.nr. 137 while adding atom

For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors
-------------------------------------------------------

"(That makes 100 errors; please try again.)" (TeX)



I have checkec the 137 AA and there is C atom. The system consist of DNA
and 3 protein receptors. I used  6: AMBER99SB-ILDN force field. What is
wrong here?


You have a missing atom. Make sure you're looking at the right residue; if you have multiple chains it can be simply in another chain with that residue (and I believe pdb2gmx renumbers the chain internally, anyway).

-Justin

--
==================================================

Justin A. Lemkul, Ph.D.
Ruth L. Kirschstein NRSA Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 629
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalem...@outerbanks.umaryland.edu | (410) 706-7441
http://mackerell.umaryland.edu/~jalemkul

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