4QR6

Human Aldose Reductase complexed with a ligand with an IDD structure (2-[2-(1,3-benzothiazol-2-ylmethylcarbamoyl)-5-fluoro-phenoxy]acetic acid) at 1.05 A

• PDB DOI: https://doi.org/10.2210/pdb4QR6/pdb

• Classification: oxidoreductase/oxidoreductase inhibitor
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2014-06-30 Released: 2015-08-12 
• Deposition Author(s): Rechlin, C., Heine, A., Klebe, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.05 Å
• R-Value Free: 0.157 
• R-Value Work: 0.141 
• R-Value Observed: 0.141 

Literature

Aldose Reductase: How expensive is the opening of the specificity pocket? IDD ligands under investigation

Rechlin, C., Scheer, F., Toth, P., Heine, A., Diederich, W., Klebe, G.

To be published.

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 kDa 
• Atom Count: 2,976 
• Modelled Residue Count: 316 
• 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  Gene Names: AKR1B1, ALDR1 EC: 1.1.1.21
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
37V	C [auth A]	{2-[(1,3-benzothiazol-2-ylmethyl)carbamoyl]-5-fluorophenoxy}acetic acid C17 H13 F N2 O4 S XHXQDRCYBSVXOU-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
37V	BindingDB:  4QR6	-TΔS: min: -1.25e+1, max: 36.89 (kJ/mol) from 4 assay(s)
		ΔH: min: -5.40e+1, max: -5.06e+1 (kJ/mol) from 2 assay(s)
		ΔG: min: -4.22e+1, max: -3.45e+1 (kJ/mol) from 5 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.05 Å
• R-Value Free: 0.157 
• R-Value Work: 0.141 
• R-Value Observed: 0.141 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.516	α = 90
b = 66.683	β = 92.56
c = 47.35	γ = 90

Software Package:

Software Name	Purpose
MAR345dtb	data collection
PHASER	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-08-12 
Deposition Author(s): Rechlin, C., Heine, A., Klebe, G.

Revision History  

• Version 1.0: 2015-08-12
  Type: Initial release
  
• Version 1.1: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description