Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 37444.25 
• Atom Count: 2994 
• Residue Count: 316 
• Unique protein chains: 1

2QXW

Perdeuterated alr2 in complex with idd594

• DOI: 10.2210/pdb2QXW/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2007-08-13 Released: 2008-01-22 
• Deposition Author(s): Blakeley, M.P., Ruiz, F., Cachau, R., Hazemann, I., Meilleur, F., Mitschler, A., Ginell, S., Afonine, P., Ventura, O., Cousido-Siah, A., Joachimiak, A., Myles, D., Podjarny, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 0.8 Å
• R-Value Free: 0.112 
• R-Value Work: 0.104 

Literature

Quantum model of catalysis based on a mobile proton revealed by subatomic x-ray and neutron diffraction studies of h-aldose reductase.

Blakeley, M.P., Ruiz, F., Cachau, R., Hazemann, I., Meilleur, F., Mitschler, A., Ginell, S., Afonine, P., Ventura, O.N., Cousido-Siah, A., Haertlein, M., Joachimiak, A., Myles, D., Podjarny, A.

(2008) Proc.Natl.Acad.Sci.Usa 105: 1844-1848

• PubMed: 18250329 
• DOI: 10.1073/pnas.0711659105
• Primary Citation of Related Structures:  
  2R24


• PubMed Abstract: 
  

We present results of combined studies of the enzyme human aldose reductase (h-AR, 36 kDa) using single-crystal x-ray data (0.66 A, 100K; 0.80 A, 15K; 1.75 A, 293K), neutron Laue data (2.2 A, 293K), and quantum mechanical modeling. These complementary techniques unveil the internal organization and mobility of the hydrogen bond network that defines the properties of the catalytic engine, explaining how this promiscuous enzyme overcomes the simultaneous requirements of efficiency and promiscuity offering a general mechanistic view for this class of enzymes.

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Organizational Affiliation: 

Institut Laue Langevin, 6, Rue Jules Horowitz, BP 156, 38042 Grenoble, France.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Aldose reductase	A	316	Homo sapiens	Mutation(s): 0  Gene Names: AKR1B1 (ALDR1) EC: 1.1.1.21
Find proteins for P15121 (Homo sapiens) Go to Gene View: AKR1B1 Go to UniProtKB:  P15121

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
CIT	A	CITRIC ACID C6 H8 O7 KRKNYBCHXYNGOX-UHFFFAOYSA-N
LDT	A	IDD594 [2-(4-BROMO-2-FLUORO-BENZYLTHIOCARBAMOYL)-5-FLUORO-PHENOXY]-ACETIC ACID C16 H12 Br F2 N O3 S JCZUIWYXULSXSW-UHFFFAOYSA-N
NDP	A	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE C21 H30 N7 O17 P3 ACFIXJIJDZMPPO-NNYOXOHSSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
LDT	ΔH: -46.2 kJ/mol (99) BINDINGDB
LDT	ΔG: -31.3 - -40.9 kJ/mol (99) BINDINGDB
LDT	IC50: 3 - 30 nM (99) BINDINGDB

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 0.8 Å
• R-Value Free: 0.112 
• R-Value Work: 0.104 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 49.345	α = 90.00
b = 66.945	β = 92.07
c = 47.407	γ = 90.00

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
SHELXL-97	refinement
SHELX	phasing
SHELX	model building
DENZO	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-08-13 
• Released Date: 2008-01-22 
• Deposition Author(s): Blakeley, M.P., Ruiz, F., Cachau, R., Hazemann, I., Meilleur, F., Mitschler, A., Ginell, S., Afonine, P., Ventura, O., Cousido-Siah, A., Joachimiak, A., Myles, D., Podjarny, A.

Revision History 

• Version 1.0: 2008-01-22
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Version format compliance
• Version 1.2: 2012-02-29
  Type: Structure summary