Term Name:	purine imidazole-ring cyclase activity
Synonyms:	DNA-4,6-diamino-5-formamidopyrimidine 8-C,9-N-lyase (cyclizing), DNA-4,6-diamino-5-formamidopyrimidine 8-C,9-N-lyase (cyclizing; DNA-adenine-forming), DNA-4,6-diamino-5-formamidopyrimidine C8-N9-lyase (cyclizing; DNA-adenine-forming)
Definition:	Catalysis of the reaction: DNA 4,6-diamino-5-formamidopyrimidine = DNA adenine + H2O.
Ontology:	GO: Molecular Function [GO:0050230]    QuickGO    AmiGO