| Phylum | Epsilonproteobacteria |
| Order | Campylobacterales |
| Organism | Sulfurospirillum barnesii |
| Hydrogenase | [NiFe] Group 4c |
| Activity (Predicted) | Evolving |
| Oxygen Tolerance (Predicted) | Sensitive |
| Subunits (Predicted) | 7 |
| Metal Centres (Predicted) | [NiFe]-centre, 1 x [4Fe4S] clusters |
| Accessory Subunits (Predicted) | NuoL, NuoH, NuoC, [FeS] protein, polyferredoxin |
MDNTKVILGPFDVALEEPVYFKIEPNSDGKTIKTVDMINGFVHRGIESIVLQRNFLQNLIITEKVCALCSNNHPFTYCMAVEKIAGLRLPERALYLRVVADEIKRIASHLFNLGMLSHLIHNKALMTQFLEAREDFQDLKEAIWGNRMDLSANTIGGVKFDLDATLIASIKTTLDKNKSKIEAFIALFETDATLISRLSGVGVLGYEDALRLGVVGPVARASGVNNDVRKRAPYAAYDQLSFDVVLQQDGDVLSRAKVRLYEILESMKLLHQALDALPTGEIVLPTRTLIPEGEAISRTEAPRGELVYYLKTNGTQKPERMKWRVPTYMNWEALKVMMPNNSIDDVALIFNSIDPCISCTER