From: Aravinda Munasinghe (aravinda1879_at_gmail.com)
Date: Wed Jul 10 2019 - 11:18:51 CDT

To be consistent with atom types, if u running C36m use C36 topology files
to built your systems. If you are using C27, use C27 topology files. In the
header of topology files and parameter files, charmm developers always
leave comments on their respective compatibilities.

On Wed, Jul 10, 2019, 10:30 AM 黄洋 <leolovege_at_stu.xmu.edu.cn> wrote:

> Dear Sir:
>
> I used to use all27 as the force field parameter, but I got an error when
> I changed it to all36.
>
> Errors:
>
> FATAL ERROR: DIDN'T FIND vdW PARAMETER FOR ATOM TYPE OT
>
> ------------------------------------------------------------------------------------------
>
>
> I have used top_all27_prot_lipid_na.inp as topology file to build .psf
> file by VMD Autopsf module. futhermore, I carried out molecular dynamics
> simulation using par_all27_prot_lipid.inp as force field parameters in
> NAMD.
>
> It always works until topology file was replaced with top_all36_prot.rtf
> and force field parameters file was replaced with par_all36_prot.prm.
>
> ------------------------------------------------------------------------------------------
>
>
> I would be appreciated if anyone could tell me how to solve it.
>
> Thanks
>
>
> Yang Huang
>
> Xiamen University.
>