Lipids in photosynthetic protein complexes in the thylakoid membrane of plants, algae, and cyanobacteria
Lipids in photosynthetic protein complexes in the thylakoid membrane of plants, algae, and cyanobacteria
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植物、藻类和蓝细菌类囊体膜中光合蛋白复合物中的脂质
DOI：
10.1093/jxb/erac017
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发表时间：
2022
影响因子：
6.9
通讯作者：
Koichi Kobayashi
中科院分区：
文献类型：
--
作者：
Akiko Yoshihara;Koichi Kobayashi
在蓝细菌和叶绿体的类囊体膜中，许多参与光合作用的蛋白质与由四种独特的甘油脂质类形成的流体双层基质相关联或整合，所述甘油脂质类是单半乳糖基二酰基甘油、双半乳糖基二酰基甘油、磺基喹诺糖基二酰基甘油和磷脂酰甘油。生物化学和分子遗传学研究表明，这些甘油脂不仅在类囊体脂质双层的形成中起重要作用，而且在光合复合物的组装和功能中也起重要作用。此外，在结构生物学的相当大的进步已经确定了一些脂质分子内的光合复合物，如PSI和PSII。这些数据提供了重要的见解与蛋白质亚基的光合复合物和脂质在类囊体膜的分布的协会。在这里，我们总结了最近的高分辨率观测脂质分子的光合复合物的结构，从植物，藻类和蓝藻，并评估光合蛋白复合物和类囊体脂质双层之间的脂质分布。通过将结构信息整合到生物化学和分子遗传学研究的结果中，我们突出了脂质在植物，藻类和蓝藻之间光合复合物的组装和功能中的保守和分化作用。
In the thylakoid membrane of cyanobacteria and chloroplasts, many proteins involved in photosynthesis are associated with or integrated into the fluid bilayer matrix formed by four unique glycerolipid classes, monogalactosyldiacylglycerol, digalactosyldiacylglycerol, sulfoquinovosyldiacylglycerol, and phosphatidylglycerol. Biochemical and molecular genetic studies have revealed that these glycerolipids play essential roles not only in the formation of thylakoid lipid bilayers but also in the assembly and functions of photosynthetic complexes. Moreover, considerable advances in structural biology have identified a number of lipid molecules within the photosynthetic complexes such as PSI and PSII. These data have provided important insights into the association of lipids with protein subunits in photosynthetic complexes and the distribution of lipids in the thylakoid membrane. Here, we summarize recent high-resolution observations of lipid molecules in the structures of photosynthetic complexes from plants, algae, and cyanobacteria, and evaluate the distribution of lipids among photosynthetic protein complexes and thylakoid lipid bilayers. By integrating the structural information into the findings from biochemical and molecular genetic studies, we highlight the conserved and differentiated roles of lipids in the assembly and functions of photosynthetic complexes among plants, algae, and cyanobacteria.