Re: atom type HZ4 not found

From: Peter Freddolino (
Date: Sat Aug 05 2006 - 16:31:20 CDT

Hi Dhiraj,
did you add a MASS line for the HZ4 atom type to the topology file?
You'll find a block of them at the top of the file, one for each type.
This is likely the cause of the problem.

Dhiraj Srivastava wrote:
> Hi all
> when i am trying to prepare psf file using psfgen for my protein
> containing ligand, i am getting error that atom type HZ4 not found. my
> topology file for ligand has an atom type HZ4. the original parameter
> file does not have atom type HZ4 but i had modified the parameter file
> so it has atomtype HZ4. in psfgen, it never ask for parameter file. so
> what should i do to resolve this problem? why psfgen is showing this
> error?
> --
> Dhiraj Kumar Srivastava
> Department of Chemistry
> University of Missouri-Columbia
> MO, 65211
> Ph. no. 001-573-639-0153

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