Rhodopsin particles in the photoreceptor membrane of an insect

Electron-microscopic examination of freeze-fractured fly retinae has revealed the presence of particles, 80 to 100 A in diameter, on the photoreceptor membrane. Flies which were raised on a vitamin-A deficient diet show a substantial reduction in the density of such particles. The reduction in parti...

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Bibliographic Details
Published inZeitschrift für Naturforschung. Section C, Biosciences Vol. 31; no. 11-12; p. 763
Main Authors Boschek, C B, Hamdorf, K
Format Journal Article
LanguageEnglish
Published Germany 01.12.1976
Subjects
Animals
Cell Membrane - metabolism
Cell Membrane - ultrastructure
Diptera
Freeze Fracturing
Microscopy, Electron
Photoreceptor Cells - metabolism
Photoreceptor Cells - ultrastructure
Retinal Pigments - metabolism
Rhodopsin - metabolism
Vitamin A Deficiency - metabolism
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Summary:Electron-microscopic examination of freeze-fractured fly retinae has revealed the presence of particles, 80 to 100 A in diameter, on the photoreceptor membrane. Flies which were raised on a vitamin-A deficient diet show a substantial reduction in the density of such particles. The reduction in particle density is in agreement with the reduction in visual-pigment concentration as measured spectrophotometrically for these flies. These results suggest that the particles are identical with molecules of the visual pigment, rhodopsin.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0341-0382
DOI:10.1515/znc-1976-11-1230