In vivo dynamics of clathrin and its adaptor-dependent recruitment to the actin-based endocytic machinery in yeast.
Journal Article (Journal Article)
Clathrin-mediated transport is a major pathway for endocytosis. However, in yeast, where cortical actin patches are essential for endocytosis, plasma membrane-associated clathrin has never been observed. Using live cell imaging, we demonstrate cortical clathrin in association with the actin-based endocytic machinery in yeast. Fluorescently tagged clathrin is found in highly mobile internal trans-Golgi/endosomal structures and in smaller cortical patches. Total internal reflection fluorescence microscopy showed that cortical patches are likely endocytic sites, as clathrin is recruited prior to a burst of intensity of the actin patch/endocytic marker, Abp1. Clathrin also accumulates at the cortex with internalizing alpha factor receptor, Ste2p. Cortical clathrin localizes with epsins Ent1/2p and AP180s, and its recruitment to the surface is dependent upon these adaptors. In contrast, Sla2p, End3p, Pan1p, and a dynamic actin cytoskeleton are not required for clathrin assembly or exchange but are required for the mobility, maturation, and/or turnover of clathrin-containing endocytic structures.
Full Text
Duke Authors
Cited Authors
- Newpher, TM; Smith, RP; Lemmon, V; Lemmon, SK
Published Date
- July 2005
Published In
Volume / Issue
- 9 / 1
Start / End Page
- 87 - 98
PubMed ID
- 15992543
Electronic International Standard Serial Number (EISSN)
- 1878-1551
International Standard Serial Number (ISSN)
- 1534-5807
Digital Object Identifier (DOI)
- 10.1016/j.devcel.2005.04.014
Language
- eng