Barbato R, Race H L, Friso G, Barber J
Wolfson Laboratories, Department of Biochemistry, Imperial College of Science, Technology and Medicine, London, UK.
FEBS Lett. 1991 Jul 29;286(1-2):86-90. doi: 10.1016/0014-5793(91)80947-2.
The chlorophyll levels in pigment proteins of photosystem II were investigated by using photosystem II preparations with different levels of complexity. Based on the assumption that there is 1 cytochrome b559 per reaction centre it has been found that oxygen-evolving complexes containing CP26 and CP29 bind 42 chlorophyll molecules. When CP26 and CP29 are stripped away, the resulting PSII cores bind 30 chlorophyll molecules while CP43-less cores bind approximately 18 chlorophylls. It is therefore concluded that CP47 and CP43 bind 9-12 molecules of chlorophyll a and the D1/D2 complex binds 6 chlorophylls. Taken together CP26 and CP29 bind about 12 chlorophyll molecules.
利用具有不同复杂程度的光系统II制剂，研究了光系统II色素蛋白中的叶绿素水平。基于每个反应中心有1个细胞色素b559的假设，已发现含有CP26和CP29的放氧复合体结合42个叶绿素分子。当去除CP26和CP29时，所得的光系统II核心结合30个叶绿素分子，而不含CP43的核心结合约18个叶绿素。因此得出结论，CP47和CP43结合9 - 12个叶绿素a分子，D1/D2复合体结合6个叶绿素。CP26和CP29总共结合约12个叶绿素分子。
