noun Etymology: probably from rhodopsin Date: 1951 any of various colorless proteins that in combination with retinal or a related prosthetic group form a visual pigment (as rhodopsin) in a reaction reversible by light

New Collegiate Dictionary. 2001.

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  • Opsin — bezeichnet den Proteinanteil eines Sehpigments, das insgesamt aus dem Protein sowie einem Chromophor besteht. Im englischen Sprachraum wird oft das gesamte Sehpigment als Opsin bezeichnet. Opsine gehören zur Superfamilie der heptahelicalen… …   Deutsch Wikipedia

  • Opsin — ⇒ Rhodopsin …   Deutsch wörterbuch der biologie

  • opsin — [äp′sin] n. any of several colorless proteins, found in the rods and cones of the retina, that combine with various forms of retinal to produce light sensitive pigments such as rhodopsin …   English World dictionary

  • Opsin — Three dimensional structure of bovine rhodopsin. The seven transmembrane domains are shown in varying colors. The chromophore is shown in red. Opsins are a group of light sensitive 35–55 kDa membrane bound G protein coupled receptors of the… …   Wikipedia

  • opsin — opsinas statusas T sritis chemija apibrėžtis Baltymas, šviesai jautraus pigmento rodopsino sudedamoji dalis. atitikmenys: angl. opsin rus. опсин …   Chemijos terminų aiškinamasis žodynas

  • opsin — General term for the apoproteins of the rhodopsin family …   Dictionary of molecular biology

  • opsin — /op sin/, n. Biochem. any of several compounds that form the protein component of the light sensitive retina pigment, rhodopsin. [1950 55; prob. back formation from RHODOPSIN] * * * …   Universalium

  • opsin — noun Any of a group of light sensitive proteins in the retina …   Wiktionary

  • opsin — The protein portion of the rhodopsin molecule; at least three separate opsins are located in cone cells. * * * op·sin äp sən n any of various colorless proteins that in combination with retinal or a related prosthetic group form a visual pigment… …   Medical dictionary

  • Opsin — Op|sin [griech. ópsis = Sehen, Sehkraft, Auge; ↑ in (3)], das; s, e: Gruppenbez. für die Proteine Stäbchen O. u. Zapfen O., die mit ↑ Retinal u. seinem 3,4 Didehydroderivat Schiff Basen bilden, die als Sehpigmente fungieren (Rhodopsin, Iodopsin,… …   Universal-Lexikon

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