| P29166 | n/a | 4xdd | CL | A | 610 | e4xddA3 | Fe-only hydrogenase | Fe-only hydrogenase | Fe-only hydrogenase | Fe_hyd_lg_C |
| P29166 | n/a | 4xdd | CL | B | 607 | e4xddB1 | Fe-only hydrogenase | Fe-only hydrogenase | Fe-only hydrogenase | Fe_hyd_lg_C |
| P29166 | n/a | 8aio | CL | A | 610 | e8aioA4 | Fe-only hydrogenase | Fe-only hydrogenase | Fe-only hydrogenase | Fe_hyd_lg_C |
| P29166 | n/a | 8aio | CL | B | 610 | e8aioB1 | Fe-only hydrogenase | Fe-only hydrogenase | Fe-only hydrogenase | Fe_hyd_lg_C |
| P29166 | n/a | 8aj6 | CL | B | 609 | e8aj6B1 | Fe-only hydrogenase | Fe-only hydrogenase | Fe-only hydrogenase | Fe_hyd_lg_C |
| P29166 | n/a | 8aln | CL | B | 610 | e8alnB1 | Fe-only hydrogenase | Fe-only hydrogenase | Fe-only hydrogenase | Fe_hyd_lg_C |
| P29166 | n/a | 8ap2 | CL | A | 607 | e8ap2A5 | Fe-only hydrogenase | Fe-only hydrogenase | Fe-only hydrogenase | Fe_hyd_lg_C |
| P29166 | n/a | 8ap2 | CL | B | 609 | e8ap2B1 | Fe-only hydrogenase | Fe-only hydrogenase | Fe-only hydrogenase | Fe_hyd_lg_C |
| P29166 | n/a | 8ap2 | CL | B | 609 | e8ap2B4 | Fe-only hydrogenase smaller subunit | Fe-only hydrogenase smaller subunit | Fe-only hydrogenase smaller subunit | Fe_hyd_SSU |
| P29166 | n/a | 8cjy | CL | A | 611 | e8cjyA3 | Fe-only hydrogenase | Fe-only hydrogenase | Fe-only hydrogenase | Fe_hyd_lg_C |
| P29166 | n/a | 8cjy | CL | A | 611 | e8cjyA5 | Fe-only hydrogenase smaller subunit | Fe-only hydrogenase smaller subunit | Fe-only hydrogenase smaller subunit | Fe_hyd_SSU |
| P29166 | n/a | 8cjy | CL | B | 611 | e8cjyB1 | Fe-only hydrogenase | Fe-only hydrogenase | Fe-only hydrogenase | Fe_hyd_lg_C |
| P29166 | n/a | 8cjy | CL | B | 611 | e8cjyB5 | Fe-only hydrogenase smaller subunit | Fe-only hydrogenase smaller subunit | Fe-only hydrogenase smaller subunit | Fe_hyd_SSU |