jampani srinivas wrote:
Hi Justin,

Thanks for your reply, i have no particular choice i was using it for my other work and just started with it.

Now i tried it again with spc model,

I still get the following error.
++++++++++++++++++++++++++++++++++++++++++++++
Program grompp, VERSION 4.5.4
Source code file: toppush.c, line: 1166

Fatal error:
Atomtype OWT3 not found
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors
++++++++++++++++++++++++++++++++++++++++++++++


The error indicates you're trying to use TIP3P, not SPC.

I could see these atoms are defined in .itp file of gromos force filed, but i suspect some thing is going wrong with atom types in .atp file.

any suggestions?

Use SPC or SPC/E, they're the only models that actually seem to work with 
Gromos96.

-Justin

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

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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