extending to atomic resolution, 1.2 Angstrom or better, were inspected using four different
validation tools, PROCHECK, PROVE, SQUID and WHATCHECK. Two general questions
were addressed.(1) Do the structures imply changes in" expected" stereochemical
properties and are the target values used for restraints in the validation programs and the
refinement protocol appropriate?(2) Can errors in models be detected acid how reliable are …