“But I still have something about rotamer library to bother renfrew. If I would produced a rotamer library by myself, do you know whether there is any way to integrate it into rosetta framework and make it concerted with backrub? “
I’m not positive about backrub, but there is a way to do this. If you put all your rotamers into a PDB file, with each rotamer separated by a TER line, then add a line to the params file that says “PDB_ROTAMERS path/to/file.pdb”, you can read in arbitrary rotamer libraries.