| D | d1gkqd1 | All beta proteins | Composite domain of metallo-dependent hydrolases | Composite domain of metallo-dependent hydrolases | Hydantoinase (dihydropyrimidinase) | D-hydantoinase | (Thermus sp. ) [TaxId: 275 ], | SCOPe (2.08) |
| D | d1gkqd2 | Alpha and beta proteins (a/b) | TIM beta/alpha-barrel | Metallo-dependent hydrolases | Hydantoinase (dihydropyrimidinase), catalytic domain | D-hydantoinase | (Thermus sp. ) [TaxId: 275 ], | SCOPe (2.08) |
| C | d1gkqc1 | All beta proteins | Composite domain of metallo-dependent hydrolases | Composite domain of metallo-dependent hydrolases | Hydantoinase (dihydropyrimidinase) | D-hydantoinase | (Thermus sp. ) [TaxId: 275 ], | SCOPe (2.08) |
| C | d1gkqc2 | Alpha and beta proteins (a/b) | TIM beta/alpha-barrel | Metallo-dependent hydrolases | Hydantoinase (dihydropyrimidinase), catalytic domain | D-hydantoinase | (Thermus sp. ) [TaxId: 275 ], | SCOPe (2.08) |
| B | d1gkqb1 | All beta proteins | Composite domain of metallo-dependent hydrolases | Composite domain of metallo-dependent hydrolases | Hydantoinase (dihydropyrimidinase) | D-hydantoinase | (Thermus sp. ) [TaxId: 275 ], | SCOPe (2.08) |
| B | d1gkqb2 | Alpha and beta proteins (a/b) | TIM beta/alpha-barrel | Metallo-dependent hydrolases | Hydantoinase (dihydropyrimidinase), catalytic domain | D-hydantoinase | (Thermus sp. ) [TaxId: 275 ], | SCOPe (2.08) |
| A | d1gkqa1 | All beta proteins | Composite domain of metallo-dependent hydrolases | Composite domain of metallo-dependent hydrolases | Hydantoinase (dihydropyrimidinase) | D-hydantoinase | (Thermus sp. ) [TaxId: 275 ], | SCOPe (2.08) |
| A | d1gkqa2 | Alpha and beta proteins (a/b) | TIM beta/alpha-barrel | Metallo-dependent hydrolases | Hydantoinase (dihydropyrimidinase), catalytic domain | D-hydantoinase | (Thermus sp. ) [TaxId: 275 ], | SCOPe (2.08) |