(S)-2-ureidoglycine + NH4(+) + CO2 => allantoate + H2O + 2 H(+)
(s)-2-ureidoglycine + nh4(+) + co2 => allantoate + h2o + 2 h(+)
(S)-2-ureidoglycine + NH4(+) + CO2 => allantoate + H2O + 2 H(+)
(s)-2-ureidoglycine + nh4(+) + co2 => allantoate + h2o + 2 h(+)