Reaction: sepiapterin + H2O = xanthopterin-B2 + NH3
Systematic name: sepiapterin aminohydrolase
Comments: Also acts on isosepiapterin, but more slowly.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 62213-22-3
References:
1. Tsusué, M. Studies on sepiapterin deaminase from the silkworm, Bombyx mori. Purification and some properties of the enzyme. J. Biochem. (Tokyo) 69 (1971) 781-788. [PMID: 5572808]