An intermediate between rhodopsin and all-trans-retinal plus opsin during bleaching of rhodopsin by light; formed from bathorhodopsin and converted to metarhodopsin I with a half-life of about 20 μs. [L. lumen, light, + G. rhodon, rose, + opsis, vision]

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lu·mi·rho·dop·sin .lü-mi-rō-'däp-sən n an intermediate compound that is formed in the bleaching of rhodopsin by light and that rapidly converts to metarhodopsin

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lu·mi·rho·dop·sin (loo″mĭ-ro-dopґsin) a transient intermediate produced upon irradiation of rhodopsin in the visual cycle; see illustration at visual cycle, under cycle.

Medical dictionary. 2011.

Look at other dictionaries:

  • lumirhodopsin — Altered form of rhodopsin produced as a result of illumination …   Dictionary of molecular biology

  • lumirhodopsin — …   Useful english dictionary

  • eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

  • metarhodopsin — A light activated form of rhodopsin; m. I is formed from lumirhodopsin and is converted to m. II; m. II is the form of rhodopsin that releases all trans retinal. * * * meta·rho·dop·sin rō däp sən n either of two intermediate compounds formed in… …   Medical dictionary

  • meta-rhodopsin I, meta-rhodopsin II, meta-rhodopsin III — Precursors of opsin and all trans retinal, formed from lumirhodopsin in the visual cycle …   Medical dictionary

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