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THE VISUAL SYSTEM OF THE ALLIGATOR
The eye tissues and liver of the alligator contain vitamin A(1) alone. The retina contains rhodopsin, typical in absorption spectrum (λ(max) 500 mµ); but synthesized in solution from neo-b retinene and opsin much more rapidly than are the frog, mammalian, or chicken rhodopsins previously examined. I...
Autores principales: | , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
The Rockefeller University Press
1957
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2147649/ https://www.ncbi.nlm.nih.gov/pubmed/13428984 |
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author | Wald, George Brown, Paul K. Kennedy, Donald |
author_facet | Wald, George Brown, Paul K. Kennedy, Donald |
author_sort | Wald, George |
collection | PubMed |
description | The eye tissues and liver of the alligator contain vitamin A(1) alone. The retina contains rhodopsin, typical in absorption spectrum (λ(max) 500 mµ); but synthesized in solution from neo-b retinene and opsin much more rapidly than are the frog, mammalian, or chicken rhodopsins previously examined. In this regard alligator rhodopsin resembles the rhodopsins and porphyropsins of fishes, all of which so far investigated are synthesized rapidly in solution. The rates of synthesis in vitro of frog and alligator rhodopsins are matched closely by the rates of rod dark adaptation in living frogs and alligators, measured electrophysiologically at the same temperature. Alligator rods dark-adapt, and alligator rhodopsin is synthesized in solution, at rates characteristically associated with cones and cone pigments in frogs, mammals, and birds. |
format | Text |
id | pubmed-2147649 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1957 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-21476492008-04-23 THE VISUAL SYSTEM OF THE ALLIGATOR Wald, George Brown, Paul K. Kennedy, Donald J Gen Physiol Article The eye tissues and liver of the alligator contain vitamin A(1) alone. The retina contains rhodopsin, typical in absorption spectrum (λ(max) 500 mµ); but synthesized in solution from neo-b retinene and opsin much more rapidly than are the frog, mammalian, or chicken rhodopsins previously examined. In this regard alligator rhodopsin resembles the rhodopsins and porphyropsins of fishes, all of which so far investigated are synthesized rapidly in solution. The rates of synthesis in vitro of frog and alligator rhodopsins are matched closely by the rates of rod dark adaptation in living frogs and alligators, measured electrophysiologically at the same temperature. Alligator rods dark-adapt, and alligator rhodopsin is synthesized in solution, at rates characteristically associated with cones and cone pigments in frogs, mammals, and birds. The Rockefeller University Press 1957-05-20 /pmc/articles/PMC2147649/ /pubmed/13428984 Text en Copyright © Copyright, 1957, by The Rockefeller Institute for Medical Research This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/). |
spellingShingle | Article Wald, George Brown, Paul K. Kennedy, Donald THE VISUAL SYSTEM OF THE ALLIGATOR |
title | THE VISUAL SYSTEM OF THE ALLIGATOR |
title_full | THE VISUAL SYSTEM OF THE ALLIGATOR |
title_fullStr | THE VISUAL SYSTEM OF THE ALLIGATOR |
title_full_unstemmed | THE VISUAL SYSTEM OF THE ALLIGATOR |
title_short | THE VISUAL SYSTEM OF THE ALLIGATOR |
title_sort | visual system of the alligator |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2147649/ https://www.ncbi.nlm.nih.gov/pubmed/13428984 |
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