| Phylum | Euryarchaeota |
| Order | Methanococcales |
| Organism | Methanocaldococcus fervens |
| Hydrogenase | [Fe] |
| Activity (Predicted) | Bidirectional |
| Oxygen Tolerance (Predicted) | Tolerant |
| Subunits (Predicted) | 1 |
| Metal Centres (Predicted) | Fe ion |
| Accessory Subunits (Predicted) | None |
MKVAILGAGCYRTHAAAGITNFMRASQVAKEVGKPEIALTHSTITMGAELLHLVPDVKEVIVSDPCFAEEPGLVIIDEFDPKEVMEAHLNGNPESIMPKIREVVKAKAKELPKPPKACIHFVHPEDVGLKVTADDREAVADADIVLTWLPKGNKQPDIIKKFADAIPEGAIVTHACTIPTTKFAKIFKDLGRDDLNITSYHPGCVPEMKGQVYIAEGYASEEAVNKLYEIGKIARGNAYRMPANLIGPVCDMCSAVTATVYAALLAYRDAVTKILGAPADFAQMMADEALTQLHNLMKEKGIANMEEALDPGALLGTADSMCFGPLADVLPTALKVLEKHKKQ