RASP tools is a tool package for protein side-chain assessment.
It is also available at the RASP v1.80 site:
With the 3 tools: RASPsym, RASPchi and RASPrmsd, we can:
1. flip the symmetric side-chains to the same side;
2. calculate protein side-chain dihedral angles;
3. calculate side-chain RMSD or PDB rmsd.
The RASP logo is updated at the same time: