purine imidazole-ring cyclase activity
Catalysis of the reaction: DNA 4,6-diamino-5-formamidopyrimidine = DNA adenine + H2O.
GO:0009975
cyclase activity
is_a
GO:0016842
amidine-lyase activity
is_a
DNA-4,6-diamino-5-formamidopyrimidine 8-C,9-N-lyase (cyclizing)
related
DNA-4,6-diamino-5-formamidopyrimidine 8-C,9-N-lyase (cyclizing; DNA-adenine-forming)
related
DNA-4,6-diamino-5-formamidopyrimidine C8-N9-lyase (cyclizing; DNA-adenine-forming)
related