ID 4.1.1.97 DE 2-oxo-4-hydroxy-4-carboxy-5-ureidoimidazoline decarboxylase. AN OHCU decarboxylase. CA 5-hydroxy-2-oxo-4-ureido-2,5-dihydro-1H-imidazole-5-carboxylate + H(+) = CA (S)-allantoin + CO2. CC -!- This enzyme is part of the pathway from urate to (S)-allantoin, which CC is present in bacteria, plants and animals (but not in humans). CC -!- Formerly EC 4.1.1.n1. DR Q45697, PUCL_BACSB ; O32141, PUCL_BACSU ; Q9LVM5, TTHL_ARATH ; DR Q0ZDF7, URAD_AMICA ; A5PJD0, URAD_BOVIN ; A1L259, URAD_DANRE ; DR D8JBB8, URAD_HALJB ; D4GPU8, URAD_HALVD ; A6NGE7, URAD_HUMAN ; DR Q283N4, URAD_MOUSE ; A1L1C5, URAD_XENLA ; //