[gmx-users] POPG-Martini Force Field

Amit Choubey kgp.amit at gmail.com
Thu Oct 22 23:28:32 CEST 2009

On Thu, Oct 22, 2009 at 9:53 AM, S hv <solar30 at hotmail.com> wrote:

>  Hi,
> I am currently working with peptide/lipids interactions using the martini
> force field. I want to built a bacterial membrane, so I trying to find the
> topology of the POPG lipid but until now without success.

> In the martini_v2.0_lipids.itp file, the PG lipids are no included. I have
> seen some works using the martini force field and POPG lipids, e.g., " The
> molecular mechanism monolayer PNAS 105, 10803-10808", but they don't specify
> the topology of POPG lipids.

You can do this on your own just pull out the atomic structure of DPPC
and POPG from any website. Compare atomistic DPPC with the Coarse
Grained DPPC and it wont be hard to figure out the POPG CG topology.

BTW, the paper does give a short description about the topology of POPG

> I also tried in the martini web page, but I just found the
> martini_v2.0_lipids.itp file.
> Could anyone help me to find such topology?
> Thanks a lot for your time,
> Salvador
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