Listeriolysin O: a phagosome-specific lysin.
Listeriolysin O (LLO) is a pore-forming toxin of the cholesterol-dependent cytolysin family and a primary virulence factor of the gram-positive, facultative intracellular pathogen Listeria monocytogenes. During the intracellular life cycle of L. monocytogenes, LLO is largely responsible for mediating rupture of the phagosomal membrane, thereby allowing the bacterium access to the host cytosol, its replicative niche. In the host cytosol, LLO activity is controlled at numerous levels to prevent perforation of the plasma membrane and loss of the intracellular environment. In this review, we focus primarily on the role of LLO in phagosomal escape and the multiple regulatory mechanisms that control LLO activity in the host cytosol.
Schnupf
Pamela
P
Graduate Group in Microbiology, University of California, Berkeley, CA 94720-3202, USA.
Portnoy
Daniel A
DA
D000818:Animals; D001427:Bacterial Toxins / Q000737:chemistry / Q000378:metabolism; D003600:Cytosol / Q000378:metabolism; D006360:Heat-Shock Proteins / Q000737:chemistry / Q000378:metabolism / Q000502:physiology*; D006460:Hemolysin Proteins / Q000737:chemistry / Q000378:metabolism / Q000502:physiology*; D006801:Humans; D008089:Listeria monocytogenes / Q000378:metabolism / Q000472:pathogenicity / Q000502:physiology*; D008958:Models, Molecular; D010588:Phagosomes / Q000378:metabolism*; D037521:Virulence Factors / Q000378:metabolism
D001427:Bacterial Toxins; D006360:Heat-Shock Proteins; D006460:Hemolysin Proteins; D037521:Virulence Factors; C038705:hlyA protein, Listeria monocytogenes