1IEI | pdb_00001iei

CRYSTAL STRUCTURE OF HUMAN ALDOSE REDUCTASE COMPLEXED WITH THE INHIBITOR ZENARESTAT.

• PDB DOI: https://doi.org/10.2210/pdb1IEI/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2001-04-09 Released: 2002-04-10 
• Deposition Author(s): Kinoshita, T., Miyake, H., Fujii, T., Takakura, S., Goto, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 
  0.199 (Depositor) 
• R-Value Work: 
  0.178 (Depositor), 0.167 (DCC) 

Literature

The structure of human recombinant aldose reductase complexed with the potent inhibitor zenarestat.

Kinoshita, T., Miyake, H., Fujii, T., Takakura, S., Goto, T.

(2002) Acta Crystallogr D Biol Crystallogr 58: 622-626

• PubMed: 11914486 
• DOI: https://doi.org/10.1107/s0907444902002378
• Primary Citation Related Structures: 
  1IEI


• PubMed Abstract: 
  

  The crystal structure of the complex of human recombinant aldose reductase (AR) with zenarestat, one of its potent inhibitors, has been solved at 2.5 A resolution. Zenarestat fits neatly in the hydrophobic active site and induces unique and dramatic conformational changes. For example, the benzene ring of zenarestat occupies a gap in the side chains of Leu300 and Trp111 that interact directly and forms a CH-pi interaction in the native holoenzyme. As a result, the benzene ring of the inhibitor and these side chains form a CH-pi-pi interaction. Such structural information is key to understanding the mode of action of this class of inhibitors and for rational design of better therapeutics.

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Organizational Affiliation: 
• Exploratory Research Laboratories, Fujisawa Pharmaceutical Co. Ltd, 5-2-3, Tokodai, Tsukuba, Ibaraki 300-2698, Japan. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content 

• Total Structure Weight: 37.08 kDa 
• Atom Count: 2,773 
• Modeled Residue Count: 315 
• Deposited Residue Count: 316 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ALDOSE REDUCTASE	A	316	Homo sapiens	Mutation(s): 0  EC: 1.1.1.21 (PDB Primary Data), 1.1.1.372 (UniProt), 1.1.1.300 (UniProt), 1.1.1.54 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P15121 (Homo sapiens) Explore P15121  Go to UniProtKB:  P15121
PHAROS:  P15121 GTEx:  ENSG00000085662

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAP	B [auth A]	NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE C21 H28 N7 O17 P3 XJLXINKUBYWONI-NNYOXOHSSA-N
ZES	C [auth A]	[3-(4-BROMO-2-FLUORO-BENZYL)-7-CHLORO-2,4-DIOXO-3,4-DIHYDRO-2H-QUINAZOLIN-1-YL]-ACETIC ACID C17 H11 Br Cl F N2 O4 SXONDGSPUVNZLO-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
ZES	BindingDB:  1IEI	IC50: min: 4.4, max: 44 (nM) from 5 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free:  0.199 (Depositor) 
• R-Value Work:  0.178 (Depositor), 0.167 (DCC) 

Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.4	α = 76.2
b = 47.97	β = 76.7
c = 47.66	γ = 67.5

Software Package:

Software Name	Purpose
AMoRE	phasing
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-04-10 
Deposition Author(s): Kinoshita, T., Miyake, H., Fujii, T., Takakura, S., Goto, T.

Revision History  

• Version 1.0: 2002-04-10
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-03-13
  Changes: Data collection, Database references, Derived calculations