5-hydroxyisourate + H2O <=> 5-hydroxy-2-oxo-4-ureido-2,5-dihydro-1H-imidazole-5-carboxylate + H(+)
5-hydroxyisourate + h2o <=> 5-hydroxy-2-oxo-4-ureido-2,5-dihydro-1h-imidazole-5-carboxylate + h(+)
5-hydroxyisourate + H2O <=> 5-hydroxy-2-oxo-4-ureido-2,5-dihydro-1H-imidazole-5-carboxylate + H(+)
5-hydroxyisourate + h2o <=> 5-hydroxy-2-oxo-4-ureido-2,5-dihydro-1h-imidazole-5-carboxylate + h(+)