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

Tracy R. Rosebrock, Lirong Zeng, Jennifer J. Brady, Robert B. Abramovitch, Fangming Xiao and Gregory B. Martin ()
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Tracy R. Rosebrock: Boyce Thompson Institute for Plant Research, Tower Road, 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
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

Nature, 2007, vol. 448, issue 7151, 370-374

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.

Date: 2007
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DOI: 10.1038/nature05966

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