wwPDB validation report of PDB entry 2QA2

Crystal structure of a homologous enzyme

The analysis of the intensity distribution suggests possible twinning. Refinement using the twin protocol did however not improve Rfree and the crystals were therefore not considered twinned with space group P6522. Furthermore, data processing using programs other than XDS did not show signs of twinning.

Polyketide oxygenase CabE (E.C.1.14.13.-)
Crystal structure of CabE, an aromatic hydroxylase from angucycline biosynthesis, determined to 2.7 A resolution

The biological unit is a dimer generated from the monomer in the asymmetric unit by the operation
1 0 0
0-1 0
0 0-1

The largest off-origin peak in the Patterson function is 2.74% of the height of the origin peak. No significant pseudotranslation is detected.

structure factor analysis and validation

geometric validation package for ligand chemistry in protein x-ray structures

20191225.v01 (using entries in the PDB archive December 25th 2019)