1AI3

ORBITAL STEERING IN THE CATALYTIC POWER OF ENZYMES: SMALL STRUCTURAL CHANGES WITH LARGE CATALYTIC CONSEQUENCES

Structural Biology Knowledgebase: 1AI3 SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.220
  • R-Value Work: 0.188

Literature

Macromolecules
Sequence Display for 1AI3

Classification: OXIDOREDUCTASE

Total Structure Weight: 46770.85

Macromolecule Entities
Molecule Chains Length Organism Details
ISOCITRATE DEHYDROGENASE A 416 Escherichia coli EC#: 1.1.1.42 IUBMB
Gene Name(s): icd icdA icdE b1136 JW1122
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

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

A NICOTINAMIDE-(6-DEAMINO-6-HYDROXY-ADENINE)- DINUCLEOTIDE PHOSPHATE
C21 H27 N6 O18 P3
WKSUSMNNBQFESD-NNYOXOHSSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
ICT
Query on ICT

A ISOCITRIC ACID
C6 H8 O7
ODBLHEXUDAPZAU-ZAFYKAAXSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
MG
Query on MG

A MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
External Ligand Annotations
ID Binding Affinity (Sequence Identity %)
NDO N/A in BindingDB
Ki: 403000 nM  BindingMOAD
N/A in PDBbind

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.220
  • R-Value Work: 0.188
  • Space Group: P 43 21 2

Unit Cell:

Length (Å) Angle (°)
a = 102.40 α = 90.00
b = 102.40 β = 90.00
c = 150.70 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 1997-04-30
  • Released Date: 1997-11-12
  • Deposition author(s): Stoddard, B.L., Mesecar, A., Koshland Junior, D.E.

Revision History

  • 2011-11-02
    Type: Non-polymer description | Details: --
  • 2011-07-13
    Type: Biological assembly | Details: Added software calculated values
  • 2011-07-13
    Type: Version format compliance | Details: compliance with PDB Exchange Dictionary V4