THE VITAMIN A OF A EUPHAUSIID CRUSTACEAN
The vitamin A of the euphausiid crustacean, Meganyctiphanes norvegica, consists almost wholly of the hindered cis isomer, neo-b (11-cis). In this animal vitamin A is concentrated almost entirely in the eyes; and its properties so closely resemble those of pure neo-b vitamin A as not in themselves to...
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ftpubmed:oai:pubmedcentral.nih.gov:2147640 2023-05-15T17:10:42+02:00 THE VITAMIN A OF A EUPHAUSIID CRUSTACEAN Wald, George Brown, Paul K. 1957-03-20 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2147640 http://www.ncbi.nlm.nih.gov/pubmed/13416535 en eng The Rockefeller University Press http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2147640 http://www.ncbi.nlm.nih.gov/pubmed/13416535 Copyright © Copyright, 1957, by The Rockefeller Institute for Medical Research Article Text 1957 ftpubmed 2013-09-01T10:40:52Z The vitamin A of the euphausiid crustacean, Meganyctiphanes norvegica, consists almost wholly of the hindered cis isomer, neo-b (11-cis). In this animal vitamin A is concentrated almost entirely in the eyes; and its properties so closely resemble those of pure neo-b vitamin A as not in themselves to indicate that any other isomer is present. However, Fisher et al. (1955 b) have isolated a small fraction from this material which may be neo-c vitamin A (11, 13-dicis). The neo-b isomer was identified by its absolute absorption spectrum, the changes of absorption spectrum on isomerization, oxidation to neo-b retinene, and synthesis from the latter of rhodopsin. This identification is also in good accord with new, revised bioassays of Meganyctiphanes vitamin A by Plack et al. (1956). Text Meganyctiphanes norvegica PubMed Central (PMC) |
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Article Wald, George Brown, Paul K. THE VITAMIN A OF A EUPHAUSIID CRUSTACEAN |
topic_facet |
Article |
description |
The vitamin A of the euphausiid crustacean, Meganyctiphanes norvegica, consists almost wholly of the hindered cis isomer, neo-b (11-cis). In this animal vitamin A is concentrated almost entirely in the eyes; and its properties so closely resemble those of pure neo-b vitamin A as not in themselves to indicate that any other isomer is present. However, Fisher et al. (1955 b) have isolated a small fraction from this material which may be neo-c vitamin A (11, 13-dicis). The neo-b isomer was identified by its absolute absorption spectrum, the changes of absorption spectrum on isomerization, oxidation to neo-b retinene, and synthesis from the latter of rhodopsin. This identification is also in good accord with new, revised bioassays of Meganyctiphanes vitamin A by Plack et al. (1956). |
format |
Text |
author |
Wald, George Brown, Paul K. |
author_facet |
Wald, George Brown, Paul K. |
author_sort |
Wald, George |
title |
THE VITAMIN A OF A EUPHAUSIID CRUSTACEAN |
title_short |
THE VITAMIN A OF A EUPHAUSIID CRUSTACEAN |
title_full |
THE VITAMIN A OF A EUPHAUSIID CRUSTACEAN |
title_fullStr |
THE VITAMIN A OF A EUPHAUSIID CRUSTACEAN |
title_full_unstemmed |
THE VITAMIN A OF A EUPHAUSIID CRUSTACEAN |
title_sort |
vitamin a of a euphausiid crustacean |
publisher |
The Rockefeller University Press |
publishDate |
1957 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2147640 http://www.ncbi.nlm.nih.gov/pubmed/13416535 |
genre |
Meganyctiphanes norvegica |
genre_facet |
Meganyctiphanes norvegica |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2147640 http://www.ncbi.nlm.nih.gov/pubmed/13416535 |
op_rights |
Copyright © Copyright, 1957, by The Rockefeller Institute for Medical Research |
_version_ |
1766067343574695936 |