3.5.2.5	allantoinase	allantoin degradation to ureidoglycolate II (ammonia producing)	
3.5.3.9	allantoate deiminase	allantoin degradation to ureidoglycolate II (ammonia producing)	
3.5.3.26	(S)-ureidoglycine aminohydrolase	allantoin degradation to ureidoglycolate II (ammonia producing)