GO:0047806

Hydrogenase (NiFe) small subunit HydA
Periplasmic (NiFeSe) hydrogenase, large subunit, selenocysteine-containing
Periplasmic
Cytochrome-c3 hydrogenase
Cytochrome-c3 hydrogenase
Periplasmic [NiFe] hydrogenase small subunit 2
Periplasmic [NiFe] hydrogenase small subunit 1