| Phylum | Epsilonproteobacteria |
| Order | Nautiliales |
| Organism | Nitratifractor salsuginis |
| Hydrogenase | [NiFe] Group 2d |
| Activity (Predicted) | Anaerobic Uptake |
| Oxygen Tolerance (Predicted) | Unknown |
| Subunits (Predicted) | 2 |
| Metal Centres (Predicted) | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster |
| Accessory Subunits (Predicted) | None |
MGRTRTRLELIEKIEGEAQVLYEYEGDRIAFAQIRFANSRHIEKILVGRDPMDALSINPRVCGICGHAHLIATVRALEACYDEIRLSDKAKAIREMTLSLELIQNHFKWFYLTILPLLGLEAPIERALEPSRLAGEMIALMAGQYPHNSYAIPGGISGEITPVDLFEFTQRLDRLKELFRRSLIDVDLDTFVRCDRIEVMLAKEGDLPRAMQTILDRGYERLGQSLDRFIVFGGGLFQPGKSIGTRIRESIDLRYLKEEAVEKSAARRVHYRNQYYETGPLARAMVMKTPLIREAHRRYKDSLFSRILARICEIPRLLDYLETLCRSIDLSEEAYIDPGPIPAEGHGAGIVEAARGSLVHQISIREGKIAAYRITTPTQWNLGNGTRENPCPAQKALMGLHRDAPAELVFKAFDVCSVCTTK