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A bacterial E3 ubiquitin ligase targets a host protein kinase to disrupt plant immunity

Author

Listed:
  • Tracy R. Rosebrock

    (Boyce Thompson Institute for Plant Research, Tower Road, Ithaca, New York 14853, USA
    Cornell University, Ithaca, New York 14853, USA)

  • Lirong Zeng

    (Boyce Thompson Institute for Plant Research, Tower Road, Ithaca, New York 14853, USA)

  • Jennifer J. Brady

    (Boyce Thompson Institute for Plant Research, Tower Road, Ithaca, New York 14853, USA)

  • Robert B. Abramovitch

    (Boyce Thompson Institute for Plant Research, Tower Road, Ithaca, New York 14853, USA
    Cornell University, Ithaca, New York 14853, USA)

  • Fangming Xiao

    (Boyce Thompson Institute for Plant Research, Tower Road, Ithaca, New York 14853, USA)

  • Gregory B. Martin

    (Boyce Thompson Institute for Plant Research, Tower Road, Ithaca, New York 14853, USA
    Cornell University, Ithaca, New York 14853, USA)

Abstract

Disrupting plant immunity Pseudomonas syringae, the cause of bacterial speck disease in tomatoes, injects an array of effector molecules into the host cell in order to secure its infection. One of them, AvrPtoB, has now been found to target the host kinase Fen, part of a highly conserved plant immunity pathway. To do this, AvrPtoB employs E3 ubiquitin ligase activity, which promotes protein degradation, and must have been acquired by this bacterial pathogen at some stage in evolution for this purpose.

Suggested Citation

  • Tracy R. Rosebrock & Lirong Zeng & Jennifer J. Brady & Robert B. Abramovitch & Fangming Xiao & Gregory B. Martin, 2007. "A bacterial E3 ubiquitin ligase targets a host protein kinase to disrupt plant immunity," Nature, Nature, vol. 448(7151), pages 370-374, July.
    • Handle: RePEc:nat:nature:v:448:y:2007:i:7151:d:10.1038_nature05966
    DOI: 10.1038/nature05966
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