ferredoxin hydrogenase activity https://github.com/geneontology/go-ontology/issues/30193 MetaCyc:HYDROG-RXN molecular_function GO:0008901 Catalysis of the reaction: 2 reduced ferredoxin + 2 H+ = 2 oxidized ferredoxin + H2. hydrogen:ferredoxin oxidoreductase activity iron-only hydrogenase activity hydrogenase activity hydrogen-lyase activity RHEA:17445 Ni-Fe-Se hydrogenase activity H(2) oxidizing hydrogenase activity hydrogenase II bidirectional hydrogenase activity hydrogenase I [Fe] hydrogenase gamma nickel hydrogenase activity Ni-Fe hydrogenase activity H2 producing hydrogenase H2 oxidizing hydrogenase nickel-iron hydrogenase activity uptake hydrogenase activity hydrogenlyase activity EC:1.12.7.2 GO:0016948 GO:0016949 iron hydrogenase activity hydrogenase (ferredoxin) activity H(2) producing hydrogenase activity GO:0016951 GO:0016950 [Fe] hydrogenase activity nickel-iron-selenium hydrogenase activity oxidoreductase activity, acting on hydrogen as donor, iron-sulfur protein as acceptor