Allantoic acid + 2 Hydrogen Ion + Water → Ammonium + Carbon dioxide + S-ureidoglycine
S-ureidoglycine + Water → (S)-Ureidoglycolic acid + Ammonium
(S)-(+)-allantoin + Water → Allantoic acid + Hydrogen Ion
Oxalureate + Phosphate → Carbamoyl phosphate + Oxamate
(S)-Ureidoglycolic acid + NADP → Hydrogen Ion + NADPH + Oxalureate
Adenosine diphosphate + Carbamoyl phosphate + 2 Hydrogen Ion → Adenosine triphosphate + Ammonium + Carbon dioxide
(S)-Ureidoglycolic acid + NAD → Hydrogen Ion + NADH + Oxalureate