Chapter title |
Functional Site-Directed Fluorometry
|
---|---|
Chapter number | 4 |
Book title |
Novel Chemical Tools to Study Ion Channel Biology
|
Published in |
Advances in experimental medicine and biology, January 2015
|
DOI | 10.1007/978-1-4939-2845-3_4 |
Pubmed ID | |
Book ISBNs |
978-1-4939-2844-6, 978-1-4939-2845-3
|
Authors |
Michael Priest, Francisco Bezanilla, Priest, Michael, Bezanilla, Francisco |
Abstract |
Initially developed in the mid-1990s to examine the conformational changes of the canonical Shaker voltage-gated potassium channel, functional site-directed fluorometry has since been expanded to numerous other voltage-gated and ligand-gated ion channels as well as transporters, pumps, and other integral membrane proteins. The power of functional site-directed fluorometry, also known as voltage-clamp fluorometry, lies in its ability to provide information on the conformational changes in a protein in response to changes in its environment with high temporal resolution while simultaneously monitoring the function of that protein. Over time, applications of site-directed fluorometry have expanded to examine the interactions of ion channels with modulators ranging from membrane potential to ligands to accessory protein subunits to lipids. In the future, the range of questions answerable by functional site-directed fluorometry and its interpretive power should continue to improve, making it an even more powerful technique for dissecting the conformational dynamics of ion channels and other membrane proteins. |
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