| Phylum | Gammaproteobacteria |
| Order | Alteromonadales |
| Organism | Shewanella halifaxensis |
| Hydrogenase | [FeFe] Group A1 |
| Activity (Predicted) | Evolving |
| Oxygen Tolerance (Predicted) | Labile |
| Subunits (Predicted) | 3 |
| Metal Centres (Predicted) | [FeFe]-centre, 2 x [4Fe4S] clusters |
| Accessory Subunits (Predicted) | Small subunit, cytochrome b |
MTVTTYQPGEIQGLIEIQASKCKGCDACQKFCPTNAIEGASGAVHSINKEKCLSCGQCLINCPFGAIIETHSALETVIAKLADKDVKVVGIIAPAVRVAIGEEFGLGTGELVTGKLYGAMNKAGFKIFDCNFAADLTIMEEGSEFIHRLHANVKGEADAGALPQFTSCCPGWVRYLETNYPSLLPNLSTAKSPQQMAGTVAKTYGAKVYAMQPENIFTVAVMPCTSKKVEASRPEFNSAWKYNQEQGANVAEYRDVDAVLTTREMAQLLKLLEIDLAKTPEYEGDSLFSEYTGAGTIFGATGGVMEAALRTAHKVLTGDEMAKLEFEPVRGLAGVKAASVTLFDQSLSQDVTVNVAVVHDMGNNVEPILRDIMAGISPYHFIEVMNCAGGCVNGGGQPIDGNGSSWIGNI