RETINAL
\ɹˈɛtɪnə͡l], \ɹˈɛtɪnəl], \ɹ_ˈɛ_t_ɪ_n_əl]\
Definitions of RETINAL
- 2006 - WordNet 3.0
- 2011 - English Dictionary Database
- 2010 - New Age Dictionary Database
- 1913 - Webster's Revised Unabridged Dictionary
- 2010 - Medical Dictionary Database
- 1920 - A practical medical dictionary.
- 1846 - Medical lexicon: a dictionary of medical science
- 1898 - American pocket medical dictionary
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By Princeton University
By DataStellar Co., Ltd
-
A carotenoid constituent of visual pigments. It is the oxidized form of retinol which functions as the active component of the visual cycle. It is bound to the protein opsin forming the complex rhodopsin. When stimulated by visible light, the retinal component of the rhodopsin complex undergoes isomerization at the 11-position of the double bond to the cis-form; this is reversed in "dark" reactions to return to the native trans-configuration.
By DataStellar Co., Ltd
By Robley Dunglison
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