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 
  • R-Value Observed: 0.203 

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 D Biol Crystallogr 65: 989-1000

  • DOI: 10.1107/S0907444909025013
  • Primary Citation of Related Structures:  
    2RH8, 3HFS

  • 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 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 ...

    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
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Anthocyanidin reductaseA338Vitis viniferaMutation(s): 0 
Gene Names: VvANR, ANR
EC: 1.3.1.77 (PDB Primary Data), 1.3.1.112 (UniProt)
UniProt
Find proteins for Q5FB34 (Vitis vinifera)
Explore Q5FB34 
Go to UniProtKB:  Q5FB34
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5FB34
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL
Download Ideal Coordinates CCD File 
B [auth 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 
  • R-Value Observed: 0.203 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.47α = 90
b = 50.47β = 90
c = 440.406γ = 120
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

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