Bryant D A
Eur J Biochem. 1981 Oct;119(2):425-9. doi: 10.1111/j.1432-1033.1981.tb05625.x.
The regulation of phycocyanin synthesis in response to growth in chromatic illumination was studied in 69 strains of cyanobacteria. Cyanobacteria (24 of 31 strains examined), which chromatically adapt by modulating the synthesis of both phycocyanin and phycoerythrin, controlled phycocyanin synthesis through the differential, photoregulated expression of two phycocyanin species (two alpha-type and two beta-type subunits). For these strains the expression of one pair of phycocyanin subunits was constitutive (i.e. irrespective of the light wavelength in which the cells were grown); the expression of the second pair of phycocyanin subunits occurred specifically during growth in red light. Two facultatively heterotrophic cyanobacteria, Calothrix strains 7101 and 7601, synthesized both the constitutive and the inducible pairs of phycocyanin subunits when grown heterotrophically in the dark after transfer from either red or green light. No evidence for the existence of multiple and/or photoregulated phycocyanin species was found for cyanobacteria (25 strains) incapable of chromatic adaptation, nor for cyanobacteria (13 strains) which chromatically adapt by modulating the synthesis of phycoerythrin alone.
在69株蓝细菌中研究了藻蓝蛋白合成对色光照射下生长的响应调控。通过调节藻蓝蛋白和藻红蛋白的合成进行色适应的蓝细菌（在所检测的31株中有24株），通过两种藻蓝蛋白种类（两个α型和两个β型亚基）的差异光调节表达来控制藻蓝蛋白的合成。对于这些菌株，一对藻蓝蛋白亚基的表达是组成型的（即与细胞生长所处的光波长无关）；第二对藻蓝蛋白亚基的表达专门在红光下生长时出现。两株兼性异养蓝细菌，眉藻菌株7101和7601，在从红光或绿光转移后于黑暗中异养生长时，合成了组成型和诱导型的藻蓝蛋白亚基对。对于不能进行色适应的蓝细菌（25株）以及通过单独调节藻红蛋白的合成进行色适应的蓝细菌（13株），未发现存在多种和/或光调节的藻蓝蛋白种类的证据。
