1PX4
E. COLI (LACZ) BETA-GALACTOSIDASE (G794A) WITH IPTG BOUND
- PDB DOI: https://doi.org/10.2210/pdb1PX4/pdb
- Classification: HYDROLASE
- Organism(s): Escherichia coli
- Expression System: Escherichia coli
- Mutation(s): Yes 
- Deposited: 2003-07-02 Released: 2004-06-15 
Experimental Data Snapshot
- Method: X-RAY DIFFRACTION
- Resolution: 1.60 Å
- R-Value Free: 0.239 
- R-Value Work: 0.187 
- R-Value Observed: 0.188 
This is version 1.5 of the entry. See complete history. 
Macromolecules
Find similar proteins by:
(by identity cutoff) | 3D Structure
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 | |||||
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Small Molecules
Ligands 4 Unique | |||||
---|---|---|---|---|---|
ID | Chains | Name / Formula / InChI Key | 2D Diagram | 3D Interactions | |
IPT Query on IPT | GD [auth D], M [auth A], SA [auth B], YB [auth C] | 1-methylethyl 1-thio-beta-D-galactopyranoside C9 H18 O5 S BPHPUYQFMNQIOC-NXRLNHOXSA-N | |||
DMS Query on DMS | AA [auth A] AB [auth B] AC [auth C] AE [auth D] BA [auth A] | DIMETHYL SULFOXIDE C2 H6 O S IAZDPXIOMUYVGZ-UHFFFAOYSA-N | |||
MG Query on MG | AD [auth D] E [auth A] F [auth A] FD [auth D] G [auth A] | MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N | |||
NA Query on NA | BD [auth D] CD [auth D] DD [auth D] ED [auth D] H [auth A] | SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N |
Experimental Data & Validation
Experimental Data
- Method: X-RAY DIFFRACTION
- Resolution: 1.60 Å
- R-Value Free: 0.239 
- R-Value Work: 0.187 
- R-Value Observed: 0.188 
- Space Group: P 21 21 21
Unit Cell:
Length ( Å ) | Angle ( ˚ ) |
---|---|
a = 149.49 | α = 90 |
b = 168.29 | β = 90 |
c = 200.44 | γ = 90 |
Software Name | Purpose |
---|---|
SCALEPACK | data scaling |
TNT | refinement |
TNT | phasing |
Entry History 
Deposition Data
- Released Date: 2004-06-15  Deposition Author(s): Juers, D.H., Hakda, S., Matthews, B.W., Huber, R.E.
Revision History (Full details and data files)
- Version 1.0: 2004-06-15
Type: Initial release - Version 1.1: 2008-04-29
Changes: Version format compliance - Version 1.2: 2011-07-13
Changes: Version format compliance - Version 1.3: 2020-07-29
Type: Remediation
Reason: Carbohydrate remediation
Changes: Advisory, Data collection, Database references, Derived calculations, Structure summary - Version 1.4: 2021-10-27
Changes: Database references, Structure summary - Version 1.5: 2023-08-16
Changes: Data collection, Refinement description