ID 6.3.3.7 DE Ni-sirohydrochlorin a,c-diamide reductive cyclase. CA 3 AH2 + ATP + H2O + Ni-sirohydrochlorin a,c-diamide = 15,17(3)-seco-F430- CA 17(3)-acid + 3 A + ADP + phosphate. CC -!- The enzyme, studied from the methanogenic archaeon Methanosarcina CC acetivorans, participates in the biosynthesis of the nickel- CC containing tetrapyrrole cofactor coenzyme F430, which is required by CC EC 2.8.4.1. DR Q8TJZ9, CFBC_METAC ; Q46FL1, CFBC_METBF ; Q8TJZ8, CFBD_METAC ; DR Q46FL2, CFBD_METBF ; Q58818, CFBD_METJA ; O27566, CFBD_METTH ; //