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Cytosolic Delivery of Granzyme B by Bacterial Toxins: Evidence that Endosomal Disruption, in Addition to Transmembrane Pore Formation, Is an Important Function of Perforin

Browne, Kylie; Blink, Elizabeth; Sutton, Vivian; Froelich, Christopher; Jans, David A; Trapani, Joseph A


Granule-mediated cell killing by cytotoxic lymphocytes requires the combined actions of a membranolytic protein, perforin, and granule-associated granzymes, but the mechanism by which they jointly kill cells is poorly understood. We have tested a series of membrane-disruptive agents including bacterial pore-forming toxins and hemolytic complement for their ability to replace perforin in facilitating granzyme B-mediated cell death. As with perforin, low concentrations of streptolysin O and...[Show more]

CollectionsANU Research Publications
Date published: 1999
Type: Journal article
Source: Molecular and Cellular Biology


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