2GGA

CP4 EPSP synthase liganded with S3P and Glyphosate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.158 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular basis for the herbicide resistance of Roundup Ready crops.

Funke, T.Han, H.Healy-Fried, M.L.Fischer, M.Schonbrunn, E.

(2006) Proc.Natl.Acad.Sci.Usa 103: 13010-13015

  • DOI: 10.1073/pnas.0603638103
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The engineering of transgenic crops resistant to the broad-spectrum herbicide glyphosate has greatly improved agricultural efficiency worldwide. Glyphosate-based herbicides, such as Roundup, target the shikimate pathway enzyme 5-enolpyruvylshikimate ...

    The engineering of transgenic crops resistant to the broad-spectrum herbicide glyphosate has greatly improved agricultural efficiency worldwide. Glyphosate-based herbicides, such as Roundup, target the shikimate pathway enzyme 5-enolpyruvylshikimate 3-phosphate (EPSP) synthase, the functionality of which is absolutely required for the survival of plants. Roundup Ready plants carry the gene coding for a glyphosate-insensitive form of this enzyme, obtained from Agrobacterium sp. strain CP4. Once incorporated into the plant genome, the gene product, CP4 EPSP synthase, confers crop resistance to glyphosate. Although widely used, the molecular basis for this glyphosate-resistance has remained obscure. We generated a synthetic gene coding for CP4 EPSP synthase and characterized the enzyme using kinetics and crystallography. The CP4 enzyme has unexpected kinetic and structural properties that render it unique among the known EPSP synthases. Glyphosate binds to the CP4 EPSP synthase in a condensed, noninhibitory conformation. Glyphosate sensitivity can be restored through a single-site mutation in the active site (Ala-100-Gly), allowing glyphosate to bind in its extended, inhibitory conformation.


    Organizational Affiliation

    Department of Medicinal Chemistry, University of Kansas, Lawrence, 66045, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
3-phosphoshikimate 1-carboxyvinyltransferase
A
455Agrobacterium sp. (strain CP4)Mutation(s): 0 
Gene Names: aroA
EC: 2.5.1.19
Find proteins for Q9R4E4 (Agrobacterium sp. (strain CP4))
Go to UniProtKB:  Q9R4E4
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
S3P
Query on S3P

Download SDF File 
Download CCD File 
A
SHIKIMATE-3-PHOSPHATE
C7 H11 O8 P
QYOJSKGCWNAKGW-PBXRRBTRSA-N
 Ligand Interaction
GPJ
Query on GPJ

Download SDF File 
Download CCD File 
A
GLYPHOSATE
C3 H9 N O5 P
XDDAORKBJWWYJS-UHFFFAOYSA-O
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
GPJKi: 6000000 nM BINDINGMOAD
GPJIC50: 11000000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.158 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 63.086α = 90.00
b = 44.979β = 106.45
c = 77.251γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
SCALEPACKdata scaling
DENZOdata reduction
CNSphasing
CrystalCleardata reduction
CrystalCleardata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-08-22
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Source and taxonomy, Version format compliance