- FASTA Sequence
- PDBx/mmCIF Format
- PDBx/mmCIF Format (gz)
- BinaryCIF Format (gz)
- PDB Format
- PDB Format (gz)
- PDBML/XML Format (gz)
- Structure Factors (CIF)
- Structure Factors (CIF - gz)
- Validation Full PDF
- Validation (XML - gz)
- Validation (CIF - gz)
- Biological Assembly 1 (CIF - gz)
- Biological Assembly 1 (PDB - gz)
- fo-fc Map (DSN6)
- 2fo-fc Map (DSN6)
- Map Coefficients (MTZ format)
1JZ8
E. COLI (lacZ) BETA-GALACTOSIDASE (E537Q) IN COMPLEX WITH ALLOLACTOSE
- PDB DOI: https://doi.org/10.2210/pdb1JZ8/pdb
- Classification: HYDROLASE
- Organism(s): Escherichia coli
- Expression System: Escherichia coli
- Mutation(s): Yes 
- Deposited: 2001-09-13 Released: 2001-12-07 
- Deposition Author(s): Juers, D.H., Matthews, B.W.
Experimental Data Snapshot
- Method: X-RAY DIFFRACTION
- Resolution: 1.50 Å
- R-Value Free: 0.208 
- R-Value Work: 0.165 
This is version 2.2 of the entry. See complete history. 
Asymmetric Unit
Global Symmetry: Dihedral - D2 (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4
Find Similar Assemblies
Biological assembly 1 assigned by authors.
Macromolecule Content
- Total Structure Weight: 478.4 kDa 
- Atom Count: 37,685 
- Modelled Residue Count: 4,044 
- Deposited Residue Count: 4,092 
- Unique protein chains: 1
Macromolecules
Entity ID: 1 | |||||
---|---|---|---|---|---|
Molecule | Chains | Sequence Length | Organism | Details | Image |
Beta-Galactosidase | 1,023 | Escherichia coli | Mutation(s): 1  Gene Names: lacZ EC: 3.2.1.23 | ||
UniProt | |||||
Find proteins for P00722 (Escherichia coli (strain K12)) Explore P00722  Go to UniProtKB:  P00722 | |||||
Entity Groups   | |||||
Sequence Clusters | 30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity | ||||
UniProt Group | P00722 | ||||
Sequence AnnotationsExpand | |||||
|
Oligosaccharides
Small Molecules
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2 | |||||
---|---|---|---|---|---|
ID | Chains | Name | Type/Class | 2D Diagram | 3D Interactions |
PRD_900041 Query on PRD_900041 | E, F, G, H | beta-allolactose | Oligosaccharide / Inducer |
Experimental Data & Validation
Experimental Data
- Method: X-RAY DIFFRACTION
- Resolution: 1.50 Å
- R-Value Free: 0.208 
- R-Value Work: 0.165 
- Space Group: P 21 21 21
Unit Cell:
Length ( Å ) | Angle ( ˚ ) |
---|---|
a = 149.39 | α = 90 |
b = 168.71 | β = 90 |
c = 200.86 | γ = 90 |
Software Name | Purpose |
---|---|
TNT | refinement |
MAR345 | data collection |
MOSFLM | data reduction |
CCP4 | data scaling |
TNT | phasing |
Entry History 
Deposition Data
- Released Date: 2001-12-07  Deposition Author(s): Juers, D.H., Matthews, B.W.
Revision History (Full details and data files)
- Version 1.0: 2001-12-07
Type: Initial release - Version 1.1: 2008-04-27
Changes: Version format compliance - Version 1.2: 2011-07-13
Changes: Version format compliance - Version 1.3: 2017-10-04
Changes: Advisory, Refinement description - Version 2.0: 2020-07-29
Type: Remediation
Reason: Carbohydrate remediation
Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary - Version 2.1: 2021-10-27
Changes: Database references, Structure summary - Version 2.2: 2023-08-16
Changes: Data collection, Refinement description