Use of Fluorescent Probes in the Study of Phospholipid--sterol Bilayers

Overview

Journal Biochem J

Specialty Biochemistry

Date 1980 Dec 1

PMID 7283973

Citations 1

Authors

S A Wharton

S G De Martinez

C Green

Affiliations

Soon will be listed here.

Abstract

1. The transfer of excitation energy between the fluorescent probes 1,6-diphenylhexa-1,3,5-triene and 12-(9-anthroyl)stearic acid and the cholesterol analogue cholesta-4,6-dien-3-one in phosphatidylcholine liposomes has been investigated. 2. The results indicate that probes and steroid are randomly distributed in the bilayer at steroid concentrations up to 35 mol%. 3. The degree of polarization of diphenylhexatriene fluorescence increases with increasing cholesterol content. Other sterols, differing in structure in the region of the polar group or in the side chain at position-17, produce similar but not identical effects. 4. the results are consistent with the proposal that diphenylhexatriene gives a general picture of the state of the bilayer and that there is no segregation of sterols in liquid-crystalline phosphatidylcholine bilayers.

Citing Articles

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PMID: 6508765 PMC: 1144425. DOI: 10.1042/bj2240285.

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