1X97

Crystal structure of Aldose Reductase complexed with 2R4S (Stereoisomer of Fidarestat, 2S4S)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

High-Resolution Structures of Human Aldose Reductase Holoenzyme in Complex with Stereoisomers of the Potent Inhibitor Fidarestat: Stereospecific Interaction between the Enzyme and a Cyclic Imide Type Inhibitor

El-Kabbani, O.Darmanin, C.Oka, M.Schulze-Briese, C.Tomizaki, T.Hazemann, I.Mitschler, A.Podjarny, A.

(2004) J.Med.Chem. 47: 4530-4537

  • DOI: 10.1021/jm0497794
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Structure determinations of human aldose reductase holoenzyme in complex with the 2S4R-,2R4S- and 2R4R-isomers of the potent inhibitor Fidarestat ((2S,4S)-6-fluoro-2',5'-dioxospiro[chroman-4,4'-imidazoline]-2-carboxamide) were carried out in order to ...

    Structure determinations of human aldose reductase holoenzyme in complex with the 2S4R-,2R4S- and 2R4R-isomers of the potent inhibitor Fidarestat ((2S,4S)-6-fluoro-2',5'-dioxospiro[chroman-4,4'-imidazoline]-2-carboxamide) were carried out in order to elucidate the binding modes responsible for the differences in their inhibitory potencies. In the complex structure with the 2R4S-isomer the cyclic imide moiety formed hydrogen bonds with the side-chains of Trp111, Tyr48 and His110. In the attempt to determine the complex structure with the least potent 2R4R-isomer this ligand was not observed, and instead, the active site was simultaneously occupied by two citrate molecules (occupancies of 60% and 40%). In the case of 2S4R, the active site was occupied by a citrate molecule which anchors the 2S4R-isomer from its carbamoyl group. The structures of the complexes suggest that the differences in the interactions between the cyclic imide rings and carbamoyl groups of the compounds with residues His110, Trp111, Trp219 and Cys298 account for differences in their inhibitory potencies.


    Organizational Affiliation

    Department of Medicinal Chemistry, Victorian College of Pharmacy, Monash University (Parkville Campus), 381 Royal Parade, Parkville, Vic 3052, Australia. Ossama.El-Kabbani@vcp.monash.edu.au




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Aldose Reductase
A
316Homo sapiensMutation(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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAP
Query on NAP

Download SDF File 
Download CCD File 
A
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
 Ligand Interaction
FIR
Query on FIR

Download SDF File 
Download CCD File 
A
(2R,4S)-2-AMINOFORMYL-6-FLUORO-SPIRO[CHROMAN-4,4'-IMIDAZOLIDINE]-2',5'-DIONE
FIDARESTAT(STEREOISOMER)
C12 H10 F N3 O4
WAAPEIZFCHNLKK-PELKAZGASA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
FIRIC50: 570 nM (85) BINDINGDB
FIRIC50: 570 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.195 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 49.318α = 90.00
b = 66.311β = 92.18
c = 47.141γ = 90.00
Software Package:
Software NamePurpose
SHELXL-97refinement
X-PLORphasing
HKL-2000data reduction
SCALEPACKdata scaling
SHELXmodel building
SHELXLrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-09-07
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance