I want to simulation cytochrome C that it has two parts HEME and protein. I have charmm files par_heme.pdf and top_heme.pdf heme group but I do not know how to convert pdf file to *. inp because the paper said these are charmm file *.inp.
also, I want to combine top par files for protein and heme to one and convert to Gromacs topology file.
I searched and found I could with psfgen and top tools plugin in VMD.
I do not know how to use vmd about it.