GO:0033971

hydroxyisourate hydrolase activity

Details: 
Catalysis of the reaction: 5-hydroxyisourate + H(2)O = 5-hydroxy-2-oxo-4-ureido-2,5-dihydro-1H-imidazole-5-carboxylate + H(+). [EC:3.5.2.17, RHEA:23739]
Evidence Code: 
IEA