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Diversity Among Cyanobacterial Photosystem I Oligomers.

ABSTRACT: Unraveling the oligomeric states of the photosystem I complex is essential to understanding the evolution and native mechanisms of photosynthesis. The molecular composition and functions of this complex are highly conserved among cyanobacteria, algae, and plants; however, its structure varies considerably between species. In cyanobacteria, the photosystem I complex is a trimer in most species, but monomer, dimer and tetramer arrangements with full physiological function have recently been characterized. Higher order oligomers have also been identified in some heterocyst-forming cyanobacteria and their close unicellular relatives. Given technological progress in cryo-electron microscope single particle technology, structures of PSI dimers, tetramers and some heterogeneous supercomplexes have been resolved into near atomic resolution. Recent developments in photosystem I oligomer studies have largely enriched theories on the structure and function of these photosystems.

SUBMITTER: Chen M

PROVIDER: S-EPMC8908432 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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Diversity Among Cyanobacterial Photosystem I Oligomers.

Chen Ming M Liu Xuan X He Yujie Y Li Ningning N He Jun J Zhang Ying Y

Frontiers in microbiology 20220224

Unraveling the oligomeric states of the photosystem I complex is essential to understanding the evolution and native mechanisms of photosynthesis. The molecular composition and functions of this complex are highly conserved among cyanobacteria, algae, and plants; however, its structure varies considerably between species. In cyanobacteria, the photosystem I complex is a trimer in most species, but monomer, dimer and tetramer arrangements with full physiological function have recently been charac ...[more]

PMID: 35281305

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