| I6V297 | n/a | 6u8y | SF4 | J | 201 | e6u8yL1 | 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 | Complex1_49kDa |
| I6V297 | n/a | 6u8y | SF4 | J | 201 | e6u8yL3 | FAD-linked reductases, C-terminal domain-like | Ni-Fe binding domain in nickel-iron hydrogenase large subunit | Ni-Fe binding domain in nickel-iron hydrogenase large subunit | Complex1_49kDa |
| I6V297 | n/a | 6u8y | SF4 | j | 201 | e6u8yl1 | FAD-linked reductases, C-terminal domain-like | Ni-Fe binding domain in nickel-iron hydrogenase large subunit | Ni-Fe binding domain in nickel-iron hydrogenase large subunit | Complex1_49kDa |
| I6V297 | n/a | 6u8y | SF4 | j | 201 | e6u8yl3 | 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 | Complex1_49kDa |