1PX4

E. COLI (LACZ) BETA-GALACTOSIDASE (G794A) WITH IPTG BOUND

Structural Biology Knowledgebase: 1PX4 SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.239
  • R-Value Work: 0.187

Literature

Macromolecules
Sequence Display for 1PX4

Classification: Hydrolase

Total Structure Weight: 475139.09

Macromolecule Entities
Molecule Chains Length Organism Details
beta-galactosidase A, B, C, D 1023 Escherichia coli EC#: 3.2.1.23 IUBMB
Mutation: G794A
Gene Name(s): lacZ b0344 JW0335
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

Small Molecules
Ligands 4 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
IPT
Query on IPT

A, B, C, D ISOPROPYL-1-BETA-D-THIOGALACTOSIDE
1-(ISOPROPYLTHIO)-BETA-GALACTOPYRANSIDE (Synonym)
C9 H18 O5 S
BPHPUYQFMNQIOC-NXRLNHOXSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
DMS
Query on DMS

A, B, C, D DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
MG
Query on MG

A, B, C, D MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
NA
Query on NA

A, B, C, D SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
External Ligand Annotations
ID Binding Affinity (Sequence Identity %)
IPT Ki: 76000 nM (99) BindingDB

Ki: 590000 nM  BindingMOAD
Ki: 590000 nM  PDBbind

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.239
  • R-Value Work: 0.187
  • Space Group: P 21 21 21

Unit Cell:

Length (Å) Angle (°)
a = 149.49 α = 90.00
b = 168.29 β = 90.00
c = 200.44 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2003-07-02
  • Released Date: 2004-06-15
  • Deposition author(s): Juers, D.H., Hakda, S., Matthews, B.W., Huber, R.E.

Revision History

  • 2011-07-13
    Type: Version format compliance | Details: compliance with PDB Exchange Dictionary V4