1q5z
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Crystal Structure of the C-terminal Actin Binding Domain of Salmonella Invasion Protein A (SipA)
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Structural highlights
FunctionSIPA_SALTY Actin-binding protein that interferes with host cell actin cytoskeleton. It stimulates actin polymerization and counteracts F-actin destabilizing proteins. Potentiates SipC activity; both are required for an efficient bacterial internalization. In vitro, forms a complex with host cell protein T-plastin increasing actin bundling. It inhibits ADF/cofilin-directed depolymerization both by preventing binding of ADF and cofilin and by displacing them from F-actin. Also protects F-actin from gelsolin-directed severing and reanneals gelsolin-severed F-actin fragments.[1] [2] References
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This page was last modified 08:13, 14 February 2024.