2RH8

Structure of apo anthocyanidin reductase from vitis vinifera


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.22 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure and epimerase activity of anthocyanidin reductase from Vitis vinifera.

Gargouri, M.Manigand, C.Mauge, C.Granier, T.Langlois d'Estaintot, B.Cala, O.Pianet, I.Bathany, K.Chaudiere, J.Gallois, B.

(2009) Acta Crystallogr.,Sect.D 65: 989-1000

  • DOI: 10.1107/S0907444909025013
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Together with leucoanthocyanidin reductase, anthocyanidin reductase (ANR) is one of the two enzymes of the flavonoid-biosynthesis pathway that produces the flavan-3-ol monomers required for the formation of proanthocyanidins or condensed tannins. It ...

    Together with leucoanthocyanidin reductase, anthocyanidin reductase (ANR) is one of the two enzymes of the flavonoid-biosynthesis pathway that produces the flavan-3-ol monomers required for the formation of proanthocyanidins or condensed tannins. It has been shown to catalyse the double reduction of anthocyanidins to form 2R,3R-flavan-3-ols, which can be further transformed to the 2S,3R isomers by non-enzymatic epimerization. ANR from grape (Vitis vinifera) was expressed in Escherichia coli and purified. Unexpectedly, RP-HPLC, LC-MS and NMR experiments clearly established that the enzyme produces a 50:50 mixture of 2,3-cis and 2,3-trans flavan-3-ols which have been identified by chiral chromatography to be 2S,3S- and 2S,3R-flavan-3-ols, i.e. the naturally rare (+)-epicatechin and (-)-catechin, when cyanidin is used as the substrate of the reaction. The first three-dimensional structure of ANR is described at a resolution of 2.2 A and explains the inactivity of the enzyme in the presence of high salt concentrations.


    Organizational Affiliation

    Chimie et Biologie des Macromolécules et des Nanoobjets UMR CNRS 5248, Bâtiment B8, Avenue des Facultés, Université Bordeaux 1, Talence CEDEX, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Anthocyanidin reductase
A
338Vitis viniferaMutation(s): 0 
Gene Names: ANR
EC: 1.3.1.112
Find proteins for Q5FB34 (Vitis vinifera)
Go to UniProtKB:  Q5FB34
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.22 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.199 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 50.470α = 90.00
b = 50.470β = 90.00
c = 440.406γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
MOSFLMdata reduction
PDB_EXTRACTdata extraction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-11-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance