Patargias, George wrote:
Thanks for your reply Justin. I am trying to generate a topology dor a dna structure using the charmm dna.rtp I have renamed the residue name to DA , DG etc. I have also set DA5 and DC3 for the 5' and 3' ends

I got this error

Fatal error:
atom N not found in buiding block 2DG while combining tdb and rtp
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors


I quess I need to change something in the .rtp and/or the .tdb files. But what?


Maybe, maybe not. It looks like pdb2gmx is trying to treat your DNA as protein. What is your command line? What are you choosing for termini?

-Justin

Thanks a lot

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

Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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