Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 47637.34 
• Atom Count: 3257 
• Residue Count: 455 
• Unique protein chains: 1

2GG4

CP4 EPSP synthase (unliganded)

• DOI: 10.2210/pdb2GG4/pdb

• Classification: TRANSFERASE
• Organism(s): Agrobacterium sp. (strain CP4)
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2006-03-23 Released: 2006-08-22 
• Deposition Author(s): Schonbrunn, E., Funke, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.1 Å
• R-Value Free: 0.230 
• R-Value Work: 0.180 

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

• PubMed: 16916934 
• DOI: 10.1073/pnas.0603638103
• Primary Citation of Related Structures:  
  2GGD, 2GGA, 2GG6


• 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 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.

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Organizational Affiliation: 

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

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
3-phosphoshikimate 1-carboxyvinyltransferase	A	455	Agrobacterium 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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.1 Å
• R-Value Free: 0.230 
• R-Value Work: 0.180 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 59.490	α = 90.00
b = 76.510	β = 90.00
c = 88.880	γ = 90.00

Software Package:

Software Name	Purpose
XDS	data reduction
CrystalClear	data reduction
CNS	refinement
CrystalClear	data collection
CNS	phasing
XDS	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-03-23 
• Released Date: 2006-08-22 
• Deposition Author(s): Schonbrunn, E., Funke, T.

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