- 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)
3MUZ
E.Coli (lacZ) beta-galactosidase (R599A) in complex with IPTG
- PDB DOI: https://doi.org/10.2210/pdb3MUZ/pdb
- Classification: HYDROLASE
- Organism(s): Escherichia coli K-12
- Expression System: Escherichia coli
- Mutation(s): No 
- Deposited: 2010-05-03 Released: 2011-03-16 
- Deposition Author(s): Dugdale, M.L., Vance, M.L., Driedger, M.R., Nibber, A., Tran, A., Huber, R.E.
Experimental Data Snapshot
- Method: X-RAY DIFFRACTION
- Resolution: 1.90 Å
- R-Value Free: 0.248 
- R-Value Work: 0.219 
This is version 1.3 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 and generated by PISA (software)
Macromolecule Content
- Total Structure Weight: 492.96 kDa 
- Atom Count: 37,334 
- Modelled Residue Count: 4,044 
- Deposited Residue Count: 4,208 
- Unique protein chains: 1
Macromolecules
Entity ID: 1 | |||||
---|---|---|---|---|---|
Molecule | Chains | Sequence Length | Organism | Details | Image |
Beta-galactosidase | A [auth 1], B [auth 2], C [auth 3], D [auth 4] | 1,052 | Escherichia coli K-12 | Mutation(s): 0  Gene Names: lac z 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 | |||||
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Small Molecules
Experimental Data & Validation
Experimental Data
- Method: X-RAY DIFFRACTION
- Resolution: 1.90 Å
- R-Value Free: 0.248 
- R-Value Work: 0.219 
- Space Group: P 21 21 21
Unit Cell:
Length ( Å ) | Angle ( ˚ ) |
---|---|
a = 151.83 | α = 90 |
b = 163.28 | β = 90 |
c = 204.2 | γ = 90 |
Software Name | Purpose |
---|---|
CNS | refinement |
ADSC | data collection |
MOSFLM | data reduction |
SCALA | data scaling |
CNS | phasing |
Entry History 
Deposition Data
- Released Date: 2011-03-16  Deposition Author(s): Dugdale, M.L., Vance, M.L., Driedger, M.R., Nibber, A., Tran, A., Huber, R.E.
Revision History (Full details and data files)
- Version 1.0: 2011-03-16
Type: Initial release - Version 1.1: 2011-07-13
Changes: Version format compliance - Version 1.2: 2020-07-29
Type: Remediation
Reason: Carbohydrate remediation
Changes: Data collection, Database references, Derived calculations, Structure summary - Version 1.3: 2023-09-06
Changes: Data collection, Database references, Refinement description, Structure summary