1JZ3
E. COLI (lacZ) BETA-GALACTOSIDASE-TRAPPED 2-DEOXY-GALACTOSYL ENZYME INTERMEDIATE
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 (A, B, C, D)  | Beta-Galactosidase | polymer | 1023 | 116506.3 | 4 | UniProt (P00722) Pfam (PF02837) Pfam (PF00703) Pfam (PF02836) Pfam (PF16353) Pfam (PF02929)  | Escherichia coli | LACTASE; lacZ; beta-d-galactosidase | 
| 2 | E, ND, PA, ZB (A, D, B, C)  | 2-deoxy-alpha-D-galactopyranose | non-polymer | 164.2 | 4 | Chemie (2DG) | |||
| 3 | AC, BC, CC, DC, EC... (C, A, D, B)  | MAGNESIUM ION | non-polymer | 24.3 | 17 | Chemie (MG) | |||
| 4 | FC, GC, HC, IC, J... (C, A, D, B)  | SODIUM ION | non-polymer | 23.0 | 16 | Chemie (NA) | |||
| 5 | KC, N, WD, XA (C, A, D, B)  | 2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL | non-polymer | 209.2 | 4 | Chemie (BTB) | |||
| 6 | AA, AB, AD, AE, BA... (A, B, C, D)  | DIMETHYL SULFOXIDE | non-polymer | 78.1 | 110 | Chemie (DMS) | |||
| 7 | AF, BF, CF, ZE (B, C, D, A)  | water | water | 18.0 | 4294 | Chemie (HOH) | 
Sequence modifications
A, B, C, D: 1 - 1023 (UniProt: P00722)
| PDB | External Database | Details | 
|---|---|---|
| Gly 1 | Thr 1 | cloning artifact | 
| Ser 2 | Met 2 | cloning artifact | 
| His 3 | Ile 3 | cloning artifact | 
| Met 4 | Thr 4 | cloning artifact | 
| Leu 5 | Asp 5 | cloning artifact | 
| Glu 6 | Ser 6 | cloning artifact | 
| Asp 7 | Leu 7 | cloning artifact | 
| Pro 8 | Ala 8 | cloning artifact | 
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 | 
| Total formula weight | 466025.1 | |
| Non-Polymers* | Number of molecules | 151 | 
| Total formula weight | 10869.2 | |
| All* | Total formula weight | 476894.3 | 






