4TTG
Beta-galactosidase (E. coli) in the presence of potassium chloride.
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B, C, D | Beta-galactosidase | polymer | 1023 | 116538.3 | 4 | UniProt (Q8VNN2) Pfam (PF02837) Pfam (PF00703) Pfam (PF02836) Pfam (PF16353) Pfam (PF02929) In PDB | Escherichia coli | Beta-gal,Lactase |
| 2 | A, D, C, B | MAGNESIUM ION | non-polymer | 24.3 | 14 | Chemie (MG) | |||
| 3 | B, A, D, C | POTASSIUM ION | non-polymer | 39.1 | 16 | Chemie (K) | |||
| 4 | A | CHLORIDE ION | non-polymer | 35.5 | 1 | Chemie (CL) | |||
| 5 | A, B, C, D | DIMETHYL SULFOXIDE | non-polymer | 78.1 | 132 | Chemie (DMS) | |||
| 6 | water | water | 18.0 | 4451 | Chemie (HOH) |
Sequence modifications
A, B, C, D: 9 - 1023 (UniProt: Q8VNN2)
| PDB | External Database | Details |
|---|---|---|
| Gly 1 | - | expression tag |
| Ser 2 | - | expression tag |
| His 3 | - | expression tag |
| Met 4 | - | expression tag |
| Leu 5 | - | expression tag |
| Glu 6 | - | expression tag |
| Asp 7 | - | expression tag |
| Pro 8 | - | expression tag |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 466153.1 | |
| Non-Polymers* | Number of molecules | 163 |
| Total formula weight | 11314.8 | |
| All* | Total formula weight | 477467.9 |
