7cmq is a 2 chain structure with sequence from Bacillus sp. TB-90. This structure supersedes the now removed PDB entry 5z2a. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
PUCL_BACSB Catalyzes two steps in the degradation of uric acid, i.e. the oxidation of uric acid to 5-hydroxyisourate (HIU) and the stereoselective decarboxylation of 2-oxo-4-hydroxy-4-carboxy-5-ureidoimidazoline (OHCU) to (S)-allantoin (By similarity).