1JZ8
E. COLI (lacZ) BETA-GALACTOSIDASE (E537Q) IN COMPLEX WITH ALLOLACTOSE
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 | 116505.3 | 4 | UniProt (P00722) Pfam (PF02837) Pfam (PF00703) Pfam (PF02836) Pfam (PF16353) Pfam (PF02929) | Escherichia coli | LACTASE; lacZ; beta-d-galactosidase |
| 2 | E, F, G, H (E, F, G, H) | beta-D-galactopyranose-(1-6)-beta-D-glucopyranose | branched | 342.3 | 4 | In PDB BIRD (PRD_900041) GlyTouCan (G87251UV) | beta-allolactose | ||
| 3 | AE, CB, FE, I, J... (D, B, A, C) | MAGNESIUM ION | non-polymer | 24.3 | 16 | Chemie (MG) | |||
| 4 | AB, BB, BE, CE, DE... (B, D, A, C) | SODIUM ION | non-polymer | 23.0 | 16 | Chemie (NA) | |||
| 5 | AA, AC, AD, AF, BA... (A, B, C, D) | DIMETHYL SULFOXIDE | non-polymer | 78.1 | 127 | Chemie (DMS) | |||
| 6 | UA (B) | beta-D-glucopyranose | non-polymer | 180.2 | 1 | Chemie (BGC) | |||
| 7 | VA (B) | D(-)-TARTARIC ACID | non-polymer | 150.1 | 1 | Chemie (TAR) | |||
| 8 | NF, OF, PF, QF (A, B, C, D) | water | water | 18.0 | 4523 | 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 |
| Gln 537 | Glu 537 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 466021.1 | |
| Branched | Number of molecules | 4 |
| Total formula weight | 1369.2 | |
| Non-Polymers* | Number of molecules | 161 |
| Total formula weight | 11009.9 | |
| All* | Total formula weight | 478400.2 |
