Molecular biology of photoreceptor spectral sensitivity

摘要: The wavelengths of spectral sensitivities the visual systems animals extend from about 300 nm in near ultraviolet to above 800 far red. Some species utilize almost this entire range, whereas others are restricted narrower ranges within these broad limits (Bowmaker, 1991a). range ‘visible’ light is limited by two factors. First, because filtering effects atmosphere, most (about 80%) radiation at earth’s surface between and 1100 with energy distribution having a maximum 480 quantum maximal 555 nm. Secondly, quantal photons 850 too low lead photoisomerization organic molecules, below have sufficiently high energies be destructive proteins (see Knowles Dartnall, 1977).