| Chapter title |
Preparation of Gap Junctions in Membrane Microdomains for Immunoprecipitation and Mass Spectrometry Interactome Analysis.
|
|---|---|
| Chapter number | 8 |
| Book title |
Gap Junction Protocols
|
| Published in |
Methods in molecular biology, January 2016
|
| DOI | 10.1007/978-1-4939-3664-9_8 |
| Pubmed ID | |
| Book ISBNs |
978-1-4939-3662-5, 978-1-4939-3664-9
|
| Authors |
Stephanie Fowler, Mark Akins, Steffany A. L. Bennett |
| Editors |
Mathieu Vinken, Scott R. Johnstone |
| Abstract |
Protein interaction networks at gap junction plaques are increasingly implicated in a variety of intracellular signaling cascades. Identifying protein interactions of integral membrane proteins is a valuable tool for determining channel function. However, several technical challenges exist. Subcellular fractionation of the bait protein matrix is usually required to identify less abundant proteins in complex homogenates. Sufficient solvation of the lipid environment without perturbation of the protein interactome must also be achieved. The present chapter describes the flotation of light and heavy liver tissue membrane microdomains to facilitate the identification and analysis of endogenous gap junction proteins and includes technical notes for translation to other integral membrane proteins, tissues, or cell culture models. These procedures are valuable tools for the enrichment of gap junction membrane compartments and for the identification of gap junction signaling interactomes. |
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