1SUI

Alfalfa caffeoyl coenzyme A 3-O-methyltransferase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.285 
  • R-Value Work: 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:  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 catecho ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Caffeoyl-CoA O-methyltransferase
A, B, C, D
247Medicago sativaGene Names: CCOMT
EC: 2.1.1.104
Find proteins for Q40313 (Medicago sativa)
Go to UniProtKB:  Q40313
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A, B, C, D
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
FRE
Query on FRE

Download SDF File 
Download CCD File 
A
FERULOYL COENZYME A
C31 H44 N7 O20 P3 S
ILSPFIPSQSFPCN-VYBUCKLUSA-N
 Ligand Interaction
SAH
Query on SAH

Download SDF File 
Download CCD File 
A, B, C, D
S-ADENOSYL-L-HOMOCYSTEINE
C14 H20 N6 O5 S
ZJUKTBDSGOFHSH-WFMPWKQPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.235 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 60.854α = 90.00
b = 136.486β = 90.00
c = 332.778γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
SnBphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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