The Aerolysin-Like Toxin Family of Cytolytic, Pore-Forming Toxins

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The Aerolysin-Like Toxin Family of Cytolytic, Pore-Forming Toxins

Pore-forming toxins (PFTs) represent the largest known group of bacterial protein toxins to date. Membrane insertion and subsequent pore-formation occurs after initial binding to cell-surface receptor and oligomerization. Aerolysin, a toxin produced by the Gram-negative bacterium Aeromonas hydrophila and related species, belongs to the PFT group and shares a common mechanism of action involving...

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A rivet model for channel formation by aerolysin-like pore-forming toxins.

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The MACPF/CDC family of pore-forming toxins

Pore-forming toxins (PFTs) are commonly associated with bacterial pathogenesis. In eukaryotes, however, PFTs operate in the immune system or are deployed for attacking prey (e.g. venoms). This review focuses upon two families of globular protein PFTs: the cholesterol-dependent cytolysins (CDCs) and the membrane attack complex/perforin superfamily (MACPF). CDCs are produced by Gram-positive bact...

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Bacterial two-component and hetero-heptameric pore-forming cytolytic toxins: structures, pore-forming mechanism, and organization of the genes.

Staphylococcal gamma-hemolysin (Hlg), leukocidin (Luk), and Panton-Valentine leukocidin (PVL) are two-component and hetero-oligomeric pore-forming cytolytic toxins (or cytolysin), that were first identified in bacteria. No information on the existence of hetero-oligomeric pore-forming cytolytic toxins in bacteria except for staphylococcal strains is available so far. Hlg (Hlg1 of 34 kDa/Hlg2 of...

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Sensitivity of polarized epithelial cells to the pore-forming toxin aerolysin.

Aerolysin is one of the major virulence factors produced by Aeromonas hydrophila, a human pathogen that produces deep wound infection and gastroenteritis. The toxin interacts with target mammalian cells by binding to the glycan core of glycosylphosphatidyl inositol (GPI)-anchored proteins and subsequently forms a pore in the plasma membrane. Since epithelial cells of the intestine are the prima...

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ژورنال

عنوان ژورنال: The Open Toxinology Journal

سال: 2013

ISSN: 1875-4147

DOI: 10.2174/1875414701003010053