Lumi- and Meta-Rhodopsin

ON exposure to light, rhodopsin (visual purple, the photo-receptor pigment of low-intensity vision) is changed to lumi-rhodopsin and thence by a thermal reaction to meta-rhodopsin 1 . The exact nature of these substances is unknown, other than that they consist of retinene (vitamin A aldehyde) joine...

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Bibliographic Details
Published in:Nature (London) 1955-07, Vol.176 (4474), p.220-221
Main Authors: PITT, G. A. J., TINKHAM, M.
Format: Article
Language:English
Subjects:
Humanities and Social Sciences
Humans
letter
multidisciplinary
Old Medline
Rhodopsin
Science
Science (multidisciplinary)
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Summary:ON exposure to light, rhodopsin (visual purple, the photo-receptor pigment of low-intensity vision) is changed to lumi-rhodopsin and thence by a thermal reaction to meta-rhodopsin 1 . The exact nature of these substances is unknown, other than that they consist of retinene (vitamin A aldehyde) joined in some way to a protein, opsin. In order to explain the characteristic chemical and spectroscopic behaviour of lumi- and meta-rhodopsin, workers in this field have suggested 1 that one, or both, of lumi- and meta-rhodopsin may be free radicals.
ISSN:0028-0836
1476-4687
DOI:10.1038/176220a0