XB-ART-49818
Methods Enzymol
2014 Jan 01;540:363-79. doi: 10.1016/B978-0-12-397924-7.00020-0.
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WAVE regulatory complex activation.
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The WAVE regulatory complex (WRC) is critical to control of actin polymerization at the eukaryotic cell membrane. By reconstituting WAVE-dependent actin assembly on silica microspheres coated with phospholipid bilayers in mammalian brain extracts, we discovered that membrane recruitment and activation of WRC require the cooperative action of two mammalian GTPases, Arf and Rac. Here, we describe detailed methods to generate phospholipid-coated microspheres and porcine brain extract and outline conditions necessary to reconstitute WRC-dependent motility. In addition, we describe how to generate acylated recombinant GTPases, anchor them to lipid-coated microspheres, and reconstitute GTPase activation of WRC.
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Species referenced: Xenopus
Genes referenced: actl6a akt1 rac1