Gromacs fatal error: Atomtype CH3 not found, can some one help to resolve this error ?

I am running protein-ligand simulation in Gromacs, but when i run grompp command the fatal error shows up saying that, Atomtype CH3 not found. I am using OPLS ff. The .GRO and .ITP files of...

25 September 2019 6,530 11 View