The PDBREPORT database is a database of anomalies and errors found in structures of biological molecules in the Protein Data Bank.
[1] The PDBREPORTS database is a useful facility for judging the quality of protein structures in in silico protein structure bioinformatics projects, and has been used frequently by participants of the CASP homology modelling 'competition'.
WHAT_CHECK is the option of the WHAT IF software that validates macromolecules (especially proteins).
PDBREPORT entries may be seen as error reports for macromolecular structures deposited in the PDB.
Some of these reported anomalies may be genuine deviations from the mean rather than errors.