Squid retinochrome.
نویسندگان
چکیده
منابع مشابه
Squid retinochrome
Retinochrome is a photosensitive pigment located primarily in the inner portions of the visual cells of cephalopods. Its absorption spectrum resembles that of rhodopsin, but its chromophore is all-trans retinal, which light isomerizes to 11-cis, the reverse of the situation in rhodopsin. The 11-cis photoproduct of retinochrome slowly reverts to retinochrome in the dark. The chromophoric site of...
متن کاملDistribution of rhodopsin and retinochrome in the squid retina
The cephalopod retina contains two kinds of photopigments, rhodopsin and retinochrome. For many years retinochrome has been thought to be localized in the inner segments of the visual cells, whereas rhodopsin is in the outer segments. However, it is now clear that retinochrome can be extracted also from fragments of outer segments. In the dark-adapted retina of Loligo pealei retinochrome is dis...
متن کاملRetinochrome and Rhodopsin in the Exraocular Photoreceptor of the Squid, Todarodes
The deep-sea squid, Todarodes pac~'cus, possesses well-developed parolfactory vesicles as extraocular photoreceptors connected with the brain. The ventral set of vesicles forms a thread 3mm long and looks orange owing to photopigments. The vesicle mainly consists of receptor cells, each of which is similar in structure to the visual cell, carrying rhabdomeres in the distal process and lamellate...
متن کاملRetinochrome and rhodopsin in the extraocular photoreceptor of the squid, Todarodes
The deep-sea squid, Todarodes pacificus, possesses well-developed parolfactory vesicles as extraocular photoreceptors connected with the brain. The ventral set of vesicles forms a thread approximately 3mm long and looks orange owing to photopigments. The vesicle mainly consists of receptor cells, each of which is similar in structure to the visual cell, carrying rhabdomeres in the distal proces...
متن کاملVisual phototransduction components in cephalopod chromatophores suggest dermal photoreception.
Cephalopod mollusks are renowned for their colorful and dynamic body patterns, produced by an assemblage of skin components that interact with light. These may include iridophores, leucophores, chromatophores and (in some species) photophores. Here, we present molecular evidence suggesting that cephalopod chromatophores - small dermal pigmentary organs that reflect various colors of light - are...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1975
ISSN: 0022-1295,1540-7748
DOI: 10.1085/jgp.65.2.235