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ARTICLE |
The eye tissues and liver of the alligator contain vitamin A1 alone. The retina contains rhodopsin, typical in absorption spectrum (
max 500 mµ); but synthesized in solution from neo-b retinene and opsin much more rapidly than are the frog, mammalian, or chicken rhodopsins previously examined. In this regard alligator rhodopsin resembles the rhodopsins and porphyropsins of fishes, all of which so far investigated are synthesized rapidly in solution. The rates of synthesis in vitro of frog and alligator rhodopsins are matched closely by the rates of rod dark adaptation in living frogs and alligators, measured electrophysiologically at the same temperature. Alligator rods dark-adapt, and alligator rhodopsin is synthesized in solution, at rates characteristically associated with cones and cone pigments in frogs, mammals, and birds.
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  Z. DISCHE Physiological Chemistry of the Eye: A Review of Papers Published During 1957 Arch Ophthalmol, October 1, 1958; 60(4): 632 - 685. [PDF]
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A. LINKSZ Optics and Visual Physiology Arch Ophthalmol, June 1, 1958; 59(6): 901 - 969. [PDF]
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