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retinaldehyd

  1. Subject h.retinaldehyd
    Subject h.Retinaldehyde
    Entry terms11-trans retinal
    3,7-dimetyl-9-(2,6,6-trimetyl-1-cyclohexén-1-yl)-2,4,6,8-nonatetraenal
    axeroftal
    retinal
    retinén
    vitamín A aldehyd
    11-cis retinal
    retinylaldehyd
    retinyl aldehyd
    all-trans-retinal
    English X references11-trans-Retinal
    3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-Nonatetraenal
    Axerophthal
    Retinal
    Retinene
    Retinyl Aldehydde
    Vitamin A Aldehyde
    all-trans-Retinal
    Scope note in EnglishA diterpene derived from the carotenoid VITAMIN A which functions as the active component of the visual cycle. It is the prosthetic group of RHODOPSIN (i.e., covalently bonded to ROD OPSIN as 11-cis-retinal). When stimulated by visible light, rhodopsin transforms this cis-isomer of retinal to the trans-isomer (11-trans-retinal). This transformation straightens-out the bend of the retinal molecule and causes a change in the shape of rhodopsin triggering the visual process. A series of energy-requiring enzyme-catalyzed reactions convert the 11-trans-retinal back to the cis-isomer.
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