3IAP
E. coli (lacZ) beta-galactosidase (E416Q)
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 | 116505.3 | 4 | UniProt (B8LFD6) Pfam (PF02837) Pfam (PF00703) Pfam (PF02836) Pfam (PF16353) Pfam (PF02929) UniProt (by SIFTS) (P00722) In PDB | Escherichia coli K-12 | |
| 2 | A, C, B, D | MAGNESIUM ION | non-polymer | 24.3 | 8 | Chemie (MG) | |||
| 3 | A, C, B, D | SODIUM ION | non-polymer | 23.0 | 16 | Chemie (NA) | |||
| 4 | A, C, B, D | 2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL | non-polymer | 209.2 | 4 | Chemie (BTB) | |||
| 5 | A, B, C, D | DIMETHYL SULFOXIDE | non-polymer | 78.1 | 125 | Chemie (DMS) | |||
| 6 | water | water | 18.0 | 3832 | Chemie (HOH) |
Sequence modifications
A, B, C, D: 9 - 1023 (UniProt: B8LFD6)
| 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 |
| Gln 416 | Glu 417 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 466021.1 | |
| Non-Polymers* | Number of molecules | 153 |
| Total formula weight | 11165.9 | |
| All* | Total formula weight | 477187.0 |
