Samik Bhattacharya wrote:
hi
i am new to Gromacs. i want to simulate a protein inside a lipid box(preferably POPC or POPE). i have generated the protein inside the POPC box complex. But whenever i am going to build the .gro and .top file of that complex with pdb2gmx an error is creeping in saying "Cant find POP in residue topology database". it cant recognise the lipid.itp and popc.itp files which i've already put into the top directory.
plese help me out.

I would first recommend some tutorial material on simple systems of proteins in water before tackling a membrane protein, which is considerably more complicated.

Then, I will suggest you try the following tutorial:

http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin/gmx-tutorials/membrane_protein/index.html

-Justin

thank you


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

Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
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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