Journal
TRENDS IN CELL BIOLOGY
Volume 20, Issue 4, Pages 205-213Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tcb.2010.01.002
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Ubiquitin was first described as a tag allowing cells to degrade and recycle their own proteins. Recent research has shown ubiquitin to be central for immune system recognition of invading bacteria. This review describes a set of complex host pathogen interactions that are dependent on ubiquitination. From the host perspective, ubiquitin-dependent activation of inflammation and degradation of bacterial effectors is protective. Several pathogens become ubiquitinated in the host cell cytosol, and recent research suggests that this could trigger a form of autophagy, increasingly recognized as an important mechanism for the control of infection by a variety of human pathogens. Meanwhile, bacteria have developed mechanisms to evade or exploit the fundamental processes activated by ubiquitination, producing both ubiquitin ligases and deubiquitinases that modulate host responses.
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