1G6T

STRUCTURE OF EPSP SYNTHASE LIGANDED WITH SHIKIMATE-3-PHOSPHATE

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.155 

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This is version 1.3 of the entry. See complete history. 


Literature

Interaction of the herbicide glyphosate with its target enzyme 5-enolpyruvylshikimate 3-phosphate synthase in atomic detail.

Schonbrunn, E., Eschenburg, S., Shuttleworth, W.A., Schloss, J.V., Amrhein, N., Evans, J.N., Kabsch, W.

(2001) Proc Natl Acad Sci U S A 98: 1376-1380

  • DOI: 10.1073/pnas.98.4.1376
  • Primary Citation of Related Structures:  
    1G6S, 1G6T

  • PubMed Abstract: 

    • Biosynthesis of aromatic amino acids in plants, many bacteria, and microbes relies on the enzyme 5-enolpyruvylshikimate 3-phosphate (EPSP) synthase, a prime target for drugs and herbicides. We have identified the interaction of EPSP synthase with one of its two substrates (shikimate 3-phosphate) and with the widely used herbicide glyphosate by x-ray crystallography ...

    Biosynthesis of aromatic amino acids in plants, many bacteria, and microbes relies on the enzyme 5-enolpyruvylshikimate 3-phosphate (EPSP) synthase, a prime target for drugs and herbicides. We have identified the interaction of EPSP synthase with one of its two substrates (shikimate 3-phosphate) and with the widely used herbicide glyphosate by x-ray crystallography. The two-domain enzyme closes on ligand binding, thereby forming the active site in the interdomain cleft. Glyphosate appears to occupy the binding site of the second substrate of EPSP synthase (phosphoenol pyruvate), mimicking an intermediate state of the ternary enzyme.substrates complex. The elucidation of the active site of EPSP synthase and especially of the binding pattern of glyphosate provides a valuable roadmap for engineering new herbicides and herbicide-resistant crops, as well as new antibiotic and antiparasitic drugs.

    Organizational Affiliation: 

    Department of Medicinal Chemistry, University of Kansas, Lawrence, KS 66045, USA. eschoenb@eagle.cc.ukans.edu



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
EPSP SYNTHASEA427Escherichia coliMutation(s): 0 
Gene Names: aroA
EC: 2.5.1.19
UniProt
Find proteins for P0A6D3 (Escherichia coli (strain K12))
Explore P0A6D3 
Go to UniProtKB:  P0A6D3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A6D3
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
S3P
Query on S3P
Download Ideal Coordinates CCD File 
C [auth A]SHIKIMATE-3-PHOSPHATE
C7 H11 O8 P
QYOJSKGCWNAKGW-PBXRRBTRSA-N		 Ligand Interaction
PO4
Query on PO4
Download Ideal Coordinates CCD File 
B [auth A]PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K		 Ligand Interaction
FMT
Query on FMT
Download Ideal Coordinates CCD File 
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth A],
J [auth A],
K [auth A],
L [auth A],
M [auth A],
N [auth A],
O [auth A],
P [auth A]
FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
S3P BindingDB:  1G6T Kd: min: 7000, max: 8000 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.155 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.035α = 90
b = 84.936β = 90
c = 87.624γ = 90
Software Package:
Software NamePurpose
CNSrefinement
XDSdata scaling
CNSphasing

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-02-07
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description