GROMACS version: 2019.6
GROMACS modification: Yes/No
Hi all,
I have a problem while trying to generate nucleic.gro file by reading OPLS-AAM_for_Gromacs/oplsaam.ff files for RNA molecule. The residue and atom names are fine.
I am using OPLS force field files downloaded from here: GitHub - leelasd/OPLS-AAM_for_Gromacs: Gromacs Implementation of OPLS-AAM Force field
the command I used:
gmx pdb2gmx -f nucleic.pdb -ff OPLS-AAM_for_Gromacs -o nucleic.gro -ignh -ter
However, I am facing the error about ‘P’ atom as shown below.
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Program: gmx pdb2gmx, version 2019.6
Source file: src/gromacs/gmxpreprocess/resall.cpp (line 164)
Fatal error:
Atom type oplsm_440 (residue RA) not found in atomtype database
the atom type “oplsm_440” is present in the database. I had checked PDB file format and other necessary things like editing rna.rtp file in gromacs format. However, I could not find the origin of the error.
I guess formating of rna.rtp file is issue, but I am not sure. Could anyone please suggest solution?
Thanks.