Self-organizing actin networks drive sequential endocytic protein recruitment and vesicle release on synthetic lipid bilayers.

ABSTRACT: Forces generated by actin assembly assist membrane invagination during clathrin-mediated endocytosis (CME). The sequential recruitment of core endocytic proteins and regulatory proteins, and assembly of the actin network, are well documented in live cells and are highly conserved from yeasts to humans. However, understanding of CME protein self-organization, as well as the biochemical and mechanical principles that underlie actin's role in CME, is lacking. Here, we show that supported lipid bilayers coated with purified yeast Wiskott Aldrich Syndrome Protein (WASP), an endocytic actin assembly regulator, and incubated in cytoplasmic yeast extracts, recruit downstream endocytic proteins and assemble actin networks. Time-lapse imaging of WASP-coated bilayers revealed sequential recruitment o

SUBMITTER: Stoops EH 

PROVIDER: S-EPMC10235984 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature