On 5/1/12 8:05 AM, Ángel Piñeiro wrote:
I guess there are better solutions but an alternative is to map your bilayer to
MARTINI (http://md.chem.rug.nl/cgmartini/) and then to use SUGAR-PIE
(http://smmb.usc.es/sugarpie/sugarpie.php) to go to from MARTINI to all-atom
CHARMM36.
Even simpler would be to fix the offending atom names and build a suitable .hdb
entry (if one does not already exist) and produce the topology with pdb2gmx. I
would think it would then be far easier to preserve the original configurations
of the lipids, rather than changing the resolution back and forth.
-Justin
Hope it helps,
Ángel.
On Tue, 2012-05-01 at 17:25 +0530, Anirban Ghosh wrote:
Hi ALL,
I have a equilibrated POPC bilayer (100 ns run) that I have run using GROMOS
ff53a6 FF. Now, I wish to use this POPC bilayer for a new simulation using
CHARMM36 FF in GROAMCS 4.5.5. There are differences in atom naming conventions
(N, P, C, O) between this two FFs as a result of which pdb2gmx gives error.
Can these atom names (hydrogens can be ignored) of my equilibrated POPC
bilayer be changed manually and then used with CHARMM36 FF? Thanks a lot in
advance.
Regards,
Anirban
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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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