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Electro-optical Measurements on Aqueous Suspension of Purple Membrane from Halobacterium Halobium

Overview
Journal Biophys J
Publisher Cell Press
Specialty Biophysics
Date 1983 Jul 1
PMID 6882862
Citations 15
Authors
K Barabas
A Der
Z Dancshazy
P Ormos
L Keszthelyi
M Marden
Affiliations
Soon will be listed here.
Abstract

The permanent dipole moment, polarizability, and the retinal angle of Halobacterium halobium purple membranes were determined at different pH values. All of the parameters have a maximum between pH 5 and 6. There is a reversal in the direction of the permanent dipole moment near pH 5. The value of permanent dipole moment was determined to be 60 D/protein at pH 6.6, and the value obtained for polarizability was 3 X 10(-28) Fm2/membrane fragment. The retinal angle of all-trans retinal was 0.8 degrees smaller than that of the 13-cis conformation.

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References
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