2P4H

Crystal Structure of Vestitone Reductase from Alfalfa (Medicago sativa L.)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.188 

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This is version 1.2 of the entry. See complete history


Literature

Crystal Structure of Vestitone Reductase from Alfalfa (Medicago sativa L.).

Shao, H.Dixon, R.A.Wang, X.

(2007) J Mol Biol 369: 265-276

  • DOI: 10.1016/j.jmb.2007.03.040
  • Primary Citation of Related Structures:  
    2P4H

  • PubMed Abstract: 
  • Isoflavonoids are commonly found in leguminous plants, where they play important roles in plant defense and have significant health benefits for animals and humans. Vestitone reductase catalyzes a stereospecific NADPH-dependent reduction of (3R)-vestitone in the biosynthesis of the antimicrobial isoflavonoid phytoalexin medicarpin ...

    Isoflavonoids are commonly found in leguminous plants, where they play important roles in plant defense and have significant health benefits for animals and humans. Vestitone reductase catalyzes a stereospecific NADPH-dependent reduction of (3R)-vestitone in the biosynthesis of the antimicrobial isoflavonoid phytoalexin medicarpin. The crystal structure of alfalfa (Medicago sativa L.) vestitone reductase has been determined at 1.4 A resolution. The structure contains a classic Rossmann fold domain in the N terminus and a small C-terminal domain. Sequence and structural analysis showed that vestitone reductase is a member of the short-chain dehydrogenase/reductase (SDR) superfamily despite the low levels of sequence identity, and the prominent structural differences from other SDR enzymes with known structures. The putative binding sites for the co-factor NADPH and the substrate (3R)-vestitone were defined and located in a large cleft formed between the N and C-terminal domains of enzyme. Potential key residues for enzyme activity were also identified, including the catalytic triad Ser129-Tyr164-Lys168. A molecular docking study showed that (3R)-vestitone, but not the (3S) isomer, forms favored interactions with the co-factor and catalytic triad, thus providing an explanation for the enzyme's strict substrate stereo-specificity.


    Organizational Affiliation

    Plant Biology Division, Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK 73401, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Vestitone reductaseA [auth X]322Medicago sativaMutation(s): 0 
Gene Names: Vestitone Reductase
EC: 1.1.1.348
UniProt
Find proteins for Q40316 (Medicago sativa)
Explore Q40316 
Go to UniProtKB:  Q40316
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ40316
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.188 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.103α = 90
b = 91.85β = 90
c = 63.186γ = 90
Software Package:
Software NamePurpose
SBC-Collectdata collection
SOLVEphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-05-15
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance