| IPR051349 | Hydrogenase complex-associated protein | Family |
| IPR037024 | [NiFe]-hydrogenase, small subunit, N-terminal domain superfamily | Homologous Superfamily |
| IPR006137 | NADH:ubiquinone oxidoreductase-like, 20kDa subunit | Domain |
| IPR053625 | NADPH-dependent hydrogen-evolving hydrogenase | Family |
| IPR001501 | Nickel-dependent hydrogenase, large subunit | Family |
| IPR029014 | [NiFe]-hydrogenase, large subunit | Homologous Superfamily |
| IPR018194 | Nickel-dependent hydrogenase, large subunit, nickel binding site | Binding Site |
| IPR054945 | NADPH-dependent hydrogenase/sulfhydrogenase 1 subunit alpha | Family |