Chapter title |
A Ligand-Binding Assay to Measure the Affinity and Specificity of Sterol-Binding Proteins In Vitro
|
---|---|
Chapter number | 25 |
Book title |
Methods in Molecular Biology
|
Published in |
Methods in molecular biology, July 2017
|
DOI | 10.1007/978-1-4939-7183-1_25 |
Pubmed ID | |
Book ISBNs |
978-1-4939-7182-4, 978-1-4939-7183-1
|
Authors |
Darwiche, Rabih, Schneiter, Roger, Rabih Darwiche, Roger Schneiter |
Abstract |
Sterols are major constituents of the plasma membrane of eukaryotic cells and serve as a precursor for several classes of signaling molecules, including steroids and hydroxy sterols. They maintain the functionality and permeability barrier of the plasma membrane through lipid-lipid and lipid-protein interactions. The S. cerevisiae pathogen-related yeast proteins 1, 2, and 3 (Pry) belong to a large protein superfamily known as CAP/SCP/TAPS. Members of this superfamily have been implicated in a wide variety of processes, including immune defense in mammals and plants, pathogen virulence, sperm maturation and fertilization, venom toxicity, and prostate and brain cancer. Pry proteins bind and export sterols in vivo and the purified Pry1 protein binds sterols and related small hydrophobic compounds in vitro. Here we describe a method to determine lipid binding of a purified protein in vitro. |
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