Summary of Structure Assessment problem diagnostic structure is incomplete pDb file header coordinates occupancies residues are B-factors disordered model doesn t match R value data Freer value model has unusual Ramachandran plots, stereochemistry side chain analysisSummary of Structure Assessment problem diagnostic structure is incomplete PDB file header & coordinates, occupancies residues are B-factors disordered model doesn’t match data R value Free R value model has unusual Ramachandran plots, stereochemistry side chain analysis