Biologically Active Substance
rhodopsin Audio
rho·dop·sin [ roh-dop-sin ]
Subclass of:
G-Protein-Coupled Receptors; Rod Opsins
Definitions related to rhodopsin:
  • A purplish-red, light-sensitive pigment found in RETINAL ROD CELLS of most vertebrates. It is a complex consisting of a molecule of ROD OPSIN and a molecule of 11-cis retinal (RETINALDEHYDE). Rhodopsin exhibits peak absorption wavelength at about 500 nm.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • Photoreceptor protein found in retinal rods; it is a complex formed by the binding of retinaldehyde, the oxidized form of retinol, to the protein opsin and undergoes a series of complex reactions in response to visible light resulting in the transmission of nerve impulses to the brain.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • Rhodopsin, pigment-containing sensory protein that converts light into an electrical signal. Rhodopsin is found in a wide range of organisms, from vertebrates to bacteria. In many seeing animals, including humans, it is required for vision in dim light and is located in the retina of the...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2020
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