Immunoprecipitation and Western Blot Analysis of AP-1 Clathrin-Coated Vesicles

Margaret Kell, Abby Halpern, Heike Fölsch*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Scopus citations

Abstract

The function and integrity of epithelial cells depends on the polarized localization of transmembrane proteins at either apical or basolateral plasma membrane domains. To facilitate sorting to the basolateral domain, columnar epithelial cells express the tissue-specific AP-1B complex in addition to the ubiquitously expressed AP-1A. Both AP-1A and AP-1B are heterotetrameric clathrin adaptor protein complexes that are closely related. Here we describe a biochemical method to separate AP-1B from AP-1A clathrin-coated vesicles by immunoprecipitation from clathrin-coated vesicle pellets that were obtained by ultracentrifugation and analyzed by SDS-PAGE and western blot using fluorescently labeled secondary antibodies.

Original languageEnglish (US)
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Pages619-633
Number of pages15
DOIs
StatePublished - 2023

Publication series

NameMethods in Molecular Biology
Volume2557
ISSN (Print)1064-3745
ISSN (Electronic)1940-6029

Keywords

  • AP-1
  • Cell polarity
  • Clathrin-coated vesicles
  • Epithelial cells
  • Immunoprecipitation
  • Recycling endosomes
  • Trans-Golgi network

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

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