Abstract:SummaryCrosstalk between Rho- and Arf-family GTPases plays an important role in linking actin cytoskeletal remodeling to membrane protrusion, organelle structure, and vesicle trafficking. The central actin regulator, WAVE Regulatory Complex (WRC), is a converging point of Rac1 (a Rho-family GTPase) and Arf signaling in many processes, but how Arf promotes WRC activation is unknown. Here we reconstituted a direct interaction between Arf and WRC. This interaction can be greatly enhanced by Rac1 binding to the D … Show more
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