[gmx-users] Difference of LO and LOM atoms in lipid.itp for Gromacs force field

[Hector Mtz-Seara]

Hector Mtz-Seara wrote:

Just to clarify because as I see the carboxil with the atoms types dont 
look okay in my mail program. The bond is beteewn LC atom and both LO 
atoms and NOT  HO with the two LO as I see in my mail program

> Dear all
>
> I want to construct a carboxyl group (-COOH) to construct the 
> Arachidic acid, and I'm using the extension atoms provided with the 
> lipid.itp file its is correct to use this?
>
>                             : -LC-LO
>                                   |
>                                LO-HO
> what about LOW atom type?
>
> For the hydrocarbon group which is a better atom type (LC2, LC3) or 
> (LP2,LP3)?
>
> Thanks in advance hector
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