Actin-based bacterial motility - PubMed (original) (raw)

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Actin-based bacterial motility

P Cossart. Curr Opin Cell Biol. 1995 Feb.

Abstract

Listeria monocytogenes and other bacterial pathogens move in the host cell cytoplasm, propelled by continuous actin assembly at one pole of the bacterium. This actin-based motility requires the presence of the bacterial proteins ActA on L. monocytogenes and IcsA on Shigella flexneri. There have been several major discoveries in the past year: the discovery of the polar distribution of ActA and IcsA on the bacterial surface; the demonstration that bacterial ActA is phosphorylated in infected host cells; the involvement of some host cell proteins, particularly profilin; and the dramatic effect of ActA expression in transfected eukaryotic cells. A cell-free system that reconstitutes faithfully the actin-based motility of L. monocytogenes promises to be instrumental in the further dissection of this fascinating phenomenon.

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