1SUI

Alfalfa caffeoyl coenzyme A 3-O-methyltransferase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.235 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal Structures of Alfalfa Caffeoyl Coenzyme A 3-O-Methyltransferase

Ferrer, J.-L.Zubieta, C.Dixon, R.A.Noel, J.P.

(2005) Plant Physiol 137: 1009-1017

  • DOI: 10.1104/pp.104.048751
  • Primary Citation of Related Structures:  
    1SUI, 1SUS

  • PubMed Abstract: 
  • Caffeoyl coenzyme A 3-O-methyltransferases (CCoAOMTs) are S-adenosyl-l-methionine-dependent O-methyltransferases (OMTs) involved in lignin biosynthesis. Plant CCoAOMTs belong to a distinct family of OMTs, more closely related to the mammalian catechol OMTs than to other plant OMTs ...

    Caffeoyl coenzyme A 3-O-methyltransferases (CCoAOMTs) are S-adenosyl-l-methionine-dependent O-methyltransferases (OMTs) involved in lignin biosynthesis. Plant CCoAOMTs belong to a distinct family of OMTs, more closely related to the mammalian catechol OMTs than to other plant OMTs. The crystal structure of alfalfa (Medicago sativa) CCoAOMT in complex with the reaction products S-adenosine-l-homocysteine and feruloyl/sinapoyl CoAs presented here belong to a structurally and mechanistically distinct family of plant small molecule OMTs. These structures provide a new understanding of the substrate preferences and the catalytic mechanism accompanying CCoAOMT-mediated O-methylation of CoA-linked phenylpropanoid substrates.


    Organizational Affiliation

    Laboratoire de Cristallographie et Cristallogenèse des Protéines, Institut de Biologie Structurale, 38027 Grenoble cedex 1, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Caffeoyl-CoA O-methyltransferaseA, B, C, D247Medicago sativaMutation(s): 0 
Gene Names: CCOMT
EC: 2.1.1.104
Find proteins for Q40313 (Medicago sativa)
Explore Q40313 
Go to UniProtKB:  Q40313
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.235 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 60.854α = 90
b = 136.486β = 90
c = 332.778γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SnBphasing
MLPHAREphasing
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-03-15
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Advisory, Refinement description