David H L
J Bacteriol. 1974 Aug;119(2):527-33. doi: 10.1128/jb.119.2.527-533.1974.
The biogenesis of beta-carotene in the photochromogen Mycobacterium kansasii consists of two reactions. The first reaction is photochemical, and is dependent on the wavelength of the incident light and on oxygen but is independent of temperature. The second reaction does not require illumination, and is dependent on the temperature and on oxygen. The latter, or dark reaction, requires the synthesis of new protein, and was shown to have the characteristics of an inducible system. Carotenogenesis was stimulated by incident light of wavelengths of 420, 540, and 650 nm. Immediately after illumination there was an increase in the synthesis of ribonucleic acid and beta-carotene accumulation started after a lag of 8 to 10 min. The synthesis of beta-carotene exhibited temperature dependence with an optimum of about 36 C.
产色光细菌堪萨斯分枝杆菌中β-胡萝卜素的生物合成由两个反应组成。第一个反应是光化学反应,它取决于入射光的波长和氧气,但与温度无关。第二个反应不需要光照,它取决于温度和氧气。后者,即暗反应,需要合成新的蛋白质,并且已显示具有诱导系统的特征。波长为420、540和650nm的入射光刺激类胡萝卜素生成。光照后立即出现核糖核酸合成增加,β-胡萝卜素积累在滞后8至10分钟后开始。β-胡萝卜素的合成表现出温度依赖性,最适温度约为36℃。