WASp/SCAR proteins activate the Arp2/3 complex to nucleate actin filament assembly and are thought to have important roles in endocytosis. WASp is required for efficient endocytosis of antigen receptors, N-WASp promotes actin polymerization-dependent movement of endomembrane vesicles, and Las17 (a yeast WASp homolog) is required for endocytic internalization. However, it is unknown whether movement of endosomes or other organelles requires activation of the Arp2/3 complex by members of the WASp/SCAR family.
Pubmed ID: 12646127 RIS Download
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