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Assaying Protein Kinase Activity with Radiolabeled ATP
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When Hexokinase Gets that NAG-ing Feeling….

David O'Sullivan1, Beth Kelly1, Erika L Pearce1

  • 1Department of Immunometabolism, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany.

Cell Metabolism
|August 11, 2016
PubMed
Summary
This summary is machine-generated.

Hexokinase, a glycolytic enzyme, acts as an innate immune sensor. It binds to bacterial N-acetylglucosamine (NAG), revealing a novel mechanism for immune cell recognition of pathogens.

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Area of Science:

  • Immunology
  • Biochemistry
  • Microbiology

Background:

  • Immune cells typically recognize bacterial products using pattern recognition receptors.
  • The mechanisms of innate immune sensing are still being elucidated.

Purpose of the Study:

  • To investigate novel innate immune sensing pathways.
  • To identify non-receptor molecules involved in detecting bacterial components.

Main Methods:

  • The study focused on the interaction between host enzymes and bacterial molecules.
  • Specific binding assays were employed to test molecular interactions.

Main Results:

  • The glycolytic enzyme hexokinase was identified as a binding partner for bacterial N-acetylglucosamine (NAG).
  • Hexokinase functions as an innate immune sensor by directly interacting with bacterial NAG.

Conclusions:

  • Hexokinase represents a newly discovered innate immune sensor.
  • Direct binding of hexokinase to bacterial NAG provides a new mechanism for immune surveillance.