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 

wwPDB Validation 3D Report Full Report


This is version 1.2 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.,Sect.D 63: 665

  • DOI: 10.1107/S0907444907011997

  • 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 sit ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ALDO-KETO REDUCTASE FAMILY 1, MEMBER B1
A
316Homo sapiensGene 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
FLC
Query on FLC

Download SDF File 
Download CCD File 
A
CITRATE ANION
C6 H5 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.82 Å
  • R-Value Free: 0.113 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 47.450α = 90.00
b = 66.760β = 91.55
c = 49.310γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
EPMRphasing
SHELXL-97refinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-05-29
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance