首页|放氧光合生物LHC捕光天线的结构、排布与功能

放氧光合生物LHC捕光天线的结构、排布与功能

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在光合作用的原初光能转化过程中,光合膜上的光系统Ⅰ和光系统Ⅱ将吸收的太阳能转化为化学能,并释放氧气,产生的ATP和NADPH为二氧化碳固定提供能量.光合生物光系统核心外围的捕光天线负责收集光能,并向反应中心传递激发能,而且可以调节光合膜上的能量高效分配与利用.其中LHC类捕光天线在真核放氧光合生物进化过程中表现出丰富的多样性,研究它们的结构与功能对于探索光合作用原初反应和调控适应环境的分子机理有重要意义.本文围绕放氧光合生物LHC捕光天线的基因、蛋白、结构和功能,论述了从海洋绿藻到高等植物,以及红藻到硅藻进化过程中捕光天线的蛋白结构与功能细节,总结了它们与反应中心结合排布的不同形式,阐述了 LHC捕光天线的多样性对于光合生物适应光环境的重要意义.
Structures,arrangements and functions of LHC antennas for oxygenic photosynthetic organisms
In the process of photosynthetic primary light reaction,the photosystem(PS)Ⅰ and PS Ⅱ on the photosynthetic membrane convert the absorbed solar energy into chemical energy and releasing oxygen.The generated ATP and NADPH provide the energy for carbon dioxide fixation.The peripheral light-harvesting antennas around PSI and PSⅡ core in photosynthetic organisms are responsible for collecting light energy,transferring excitation energy,and mediating the efficient distribution and utilization on thylakoid membrane.The light-harvesting complexes(LHCs)exhibit a great diversity during the evolutionary process of eukaryotic oxygenic photosynthetic organisms,thus studying their structures and functions is of great significance for understanding the molecular mechanisms of the primary reaction and adaptations to the environment.This review summarizes the detailed structures and functions of LHC antennas during the evolution from green algae to higher plants,as well as from red algae to diatoms.We focus on the genes,proteins,structures,arrangements and functions of LHC antennas in oxygenic photosynthetic organisms,and elucidate the significance of the diversified LHC antennas in photosynthetic organisms for their adaptation to the changeable light environments.

photosynthesislight-harvesting antennaPSIPSIILHCIIFCPstructure and function of LHC antennasarrangement of LHC antennas

申丽丽、王源、王文达

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中国科学院植物研究所,光生物学重点实验室,北京 100093

光合作用 捕光天线 光系统Ⅰ 光系统Ⅱ LHCII FCP LHC结构与功能 LHC天线排布

国家重点研发计划国家自然科学基金国家自然科学基金中国科学院青年创新促进会中国科学院创新交叉团队黄三角国家农高区科技创新发展专项

2021YFA130040332222007319702602020081JCTD-2020-062022SZX12

2024

10.1360/SSV-2023-0108

中国科学(生命科学)
中国科学院

中国科学(生命科学)

CSTPCD北大核心
影响因子：0.725
ISSN：1674-7232
年,卷(期)：2024.54(8)
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