5-Enolpyruvylshikimate-3-phosphate synthase from Staphylococcus aureus is insensitive to glyphosate

The enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) catalyzes the penultimate step of the shikimate pathway, and is the target of the broad-spectrum herbicide glyphosate. Kinetic analysis of the cloned EPSPS from Staphylococcus aureus revealed that this enzyme exerts a high tolerance to g...

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Veröffentlicht in:FEBS letters 2005-01, Vol.579 (3), p.728-732
Hauptverfasser: Priestman, Melanie A., Funke, Todd, Singh, Inder M., Crupper, Scott S., Schönbrunn, Ernst
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container_end_page 732
container_issue 3
container_start_page 728
container_title FEBS letters
container_volume 579
creator Priestman, Melanie A.
Funke, Todd
Singh, Inder M.
Crupper, Scott S.
Schönbrunn, Ernst
description The enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) catalyzes the penultimate step of the shikimate pathway, and is the target of the broad-spectrum herbicide glyphosate. Kinetic analysis of the cloned EPSPS from Staphylococcus aureus revealed that this enzyme exerts a high tolerance to glyphosate, while maintaining a high affinity for its substrate phosphoenolpyruvate. Enzymatic activity is markedly influenced by monovalent cations such as potassium or ammonium, which is due to an increase in catalytic turnover. However, insensitivity to glyphosate appears to be independent from the presence of cations. Therefore, we propose that the Staphylococcus aureus EPSPS should be classified as a class II EPSPS. This research illustrates a critical mechanism of glyphosate resistance naturally occurring in certain pathogenic bacteria.
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subjects 3-Phosphoshikimate 1-Carboxyvinyltransferase
5-enolpyruvylshikimate-3-phosphate synthase
Alkyl and Aryl Transferases - drug effects
Alkyl and Aryl Transferases - genetics
Alkyl and Aryl Transferases - isolation & purification
Antibiotic
Base Sequence
Cloning, Molecular
DNA Primers
Electrophoresis, Polyacrylamide Gel
Enzyme kinetics
EPSPS
Glycine - analogs & derivatives
Glycine - pharmacology
Glyphosate
Herbicide resistance
Kinetics
Pathogen
PEP
phosphoenolpyruvate
Polymerase Chain Reaction
S3P
shikimate-3-phosphate
Staphylococcus aureus
Staphylococcus aureus - enzymology
title 5-Enolpyruvylshikimate-3-phosphate synthase from Staphylococcus aureus is insensitive to glyphosate
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