Reaction catalyzed by formate:CoB-CoM heterodisulfide,ferredoxin reductase (1.8.98.6)
2
+
2
reduced ferredoxin [iron-sulfur] cluster
+
+
+
2
=
2
+
2
oxidized ferredoxin [iron-sulfur] cluster
+
2 CO2
+
2 reduced ferredoxin [iron-sulfur] cluster
+
CoB
+
CoM
+
2 H+
=
2 formate
+
2 oxidized ferredoxin [iron-sulfur] cluster
+
CoM-S-S-CoB