WALD G, BROWN P K, KENNEDY D
J Gen Physiol. 1957 May 20;40(5):703-13. doi: 10.1085/jgp.40.5.703.
The eye tissues and liver of the alligator contain vitamin A(1) alone. The retina contains rhodopsin, typical in absorption spectrum (lambda(max) 500 mmicro); 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.
短吻鳄的眼部组织和肝脏仅含有维生素A(1)。视网膜含有视紫红质，其吸收光谱（λ(max) 500微米）具有典型性；但在溶液中由新视黄醛和视蛋白合成的速度比之前检测的青蛙、哺乳动物或鸡的视紫红质快得多。在这方面，短吻鳄视紫红质类似于鱼类的视紫红质和视紫蓝质，到目前为止所研究的所有这些物质在溶液中合成速度都很快。青蛙和短吻鳄视紫红质在体外的合成速度与活青蛙和短吻鳄的视杆暗适应速度紧密匹配，在相同温度下通过电生理学方法测量。短吻鳄的视杆进行暗适应，短吻鳄视紫红质在溶液中合成，其速度具有典型的与青蛙、哺乳动物和鸟类的视锥细胞及视锥色素相关的特征。
