Journal
SCIENCE
Volume 290, Issue 5496, Pages 1594-1597Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.290.5496.1594
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- NIAID NIH HHS [AI41599] Funding Source: Medline
- PHS HHS [18024] Funding Source: Medline
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Homologs of the Yersinia virulence effector YopJ are found in both plant and animal bacterial pathogens, as well as plant symbionts. These YopJ family members were shown to act as cysteine proteases. The catalytic triad of the protease was required for inhibition of the mitogen-activated protein kinase (MAPK) and nuclear factor kappaB (NF-kappaB) signaling in animal cells and for induction of Localized cell death in plants. The substrates for YopJ were shown to be highly conserved ubiquitin-like molecules, which are covalently added to numerous regulatory proteins. YopJ family members exert their pathogenic effect on cells by disrupting this posttranslational modification.
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