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The Lipid/Protein Interface as Xenobiotic Target Site : Kinetic Analysis of the Nicotinic Acetylcholine Receptor.

J. Biol. Chem. 276, 42191-42195 (2001)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
Membrane proteins are known to be solvated and functionally activated by a fixed number of lipid molecules whose multiple binding can be described by Adair-type binding equations. Lipophilic xenobiotics such as general anesthetics may act by competitive displacement of protein-bound lipids. A kinetic equation is now presented for various binding stoichiometries of lipid and xenobiotic, and microscopic binding constants of anesthetics and organic solvents are derived from two independent assay systems for the enhancement of agonist binding to the nicotinic acetylcholine receptor. These constants lead to the first available free energy estimate (−6.4 kcal/mol) for the binding of membrane lipid to an integral membrane protein.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
ISSN (print) / ISBN 0021-9258
e-ISSN 1083-351X
Quellenangaben Volume: 276, Issue: , Pages: 42191-42195 Article Number: , Supplement: ,
Publisher American Society for Biochemistry and Molecular Biology
Non-patent literature Publications
Reviewing status Peer reviewed