1KWK
Crystal structure of Thermus thermophilus A4 beta-galactosidase in complex with galactose
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | BETA-GALACTOSIDASE | polymer | 645 | 72908.9 | 1 | UniProt (O69315) Pfam (PF02449) Pfam (PF08532) Pfam (PF08533) | Thermus thermophilus | |
| 2 | B (A) | beta-D-galactopyranose | non-polymer | 180.2 | 1 | Chemie (GAL) | |||
| 3 | C (A) | CHLORIDE ION | non-polymer | 35.5 | 1 | Chemie (CL) | |||
| 4 | D, E (A) | ACETATE ION | non-polymer | 59.0 | 2 | Chemie (ACT) | |||
| 5 | F (A) | ZINC ION | non-polymer | 65.4 | 1 | Chemie (ZN) | |||
| 6 | G, H (A) | (4S)-2-METHYL-2,4-PENTANEDIOL | non-polymer | 118.2 | 2 | Chemie (MPD) | |||
| 7 | I (A) | water | water | 18.0 | 306 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 72908.9 | |
| Non-Polymers* | Number of molecules | 7 |
| Total formula weight | 635.5 | |
| All* | Total formula weight | 73544.4 |
