2J8T

Human aldose reductase in complex with NADP and citrate at 0.82 angstrom


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.82 Å
  • R-Value Free: 0.113 
  • R-Value Observed: 0.099 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Literature

The Atomic Resolution Structure of Human Aldose Reductase Reveals that Rearrangement of a Bound Ligand Allows the Opening of the Safety-Belt Loop.

Biadene, M.Hazemann, I.Cousido, A.Ginell, S.Joachimiak, A.Sheldrick, G.M.Podjarny, A.Schneider, T.R.

(2007) Acta Crystallogr D Biol Crystallogr 63: 665

  • DOI: https://doi.org/10.1107/S0907444907011997
  • Primary Citation of Related Structures:  
    2J8T

  • PubMed Abstract: 

    The crystal structure of human aldose reductase in complex with citrate has been determined to a resolution of 0.82 A. The difference electron density for H atoms unequivocally shows that the cofactor is in the oxidized state corresponding to the situation after the catalytic event has occurred. A citrate molecule bound to the active site has been modelled in two different conformations. These two conformations correlate with a fully closed and a partially open conformation of the so-called safety-belt loop (Gly213-Ser226). The open conformation is observed for the first time with the cofactor bound to the protein and may be related to the initial phase of the opening of the safety belt. The structure suggests that after the catalytic event, a rearrangement of a bound ligand can trigger the opening of the safety-belt loop, thus initiating the release of the oxidized cofactor.


  • Organizational Affiliation

    Lehrstuhl für Strukturchemie, Georg-August Universität, Tammanstrasse 4, D-37077 Göttingen, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ALDO-KETO REDUCTASE FAMILY 1, MEMBER B1316Homo sapiensMutation(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 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP15121
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.82 Å
  • R-Value Free: 0.113 
  • R-Value Observed: 0.099 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.45α = 90
b = 66.76β = 91.55
c = 49.31γ = 90
Software Package:
Software NamePurpose
SHELXL-97refinement
DENZOdata reduction
SCALEPACKdata scaling
EPMRphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-05-29
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-05-22
    Changes: Advisory, Data collection, Other, Refinement description
  • Version 1.4: 2023-12-13
    Changes: Advisory, Data collection, Database references, Other, Refinement description