| Q8ZPH0 | n/a | 4c3o | CL | A | 1590 | e4c3oA2 | alpha-helical domain in nickel-iron hydrogenase, large subunit | alpha-helical domain in nickel-iron hydrogenase, large subunit | alpha-helical domain in nickel-iron hydrogenase, large subunit | NiFeSe_Hases |
| Q8ZPH0 | n/a | 4c3o | CL | A | 1590 | e4c3oC2 | alpha-helical domain in nickel-iron hydrogenase, large subunit | alpha-helical domain in nickel-iron hydrogenase, large subunit | alpha-helical domain in nickel-iron hydrogenase, large subunit | NiFeSe_Hases |
| Q8ZPH0 | n/a | 4c3o | CL | E | 1587 | e4c3oE2 | alpha-helical domain in nickel-iron hydrogenase, large subunit | alpha-helical domain in nickel-iron hydrogenase, large subunit | alpha-helical domain in nickel-iron hydrogenase, large subunit | NiFeSe_Hases |