PsbO，锰稳定蛋白：对结构-功能关系的分析提供了对其在光系统 II 中的作用的深入了解。
PsbO, the manganese-stabilizing protein: analysis of the structure-function relations that provide insights into its role in photosystem II.
机构信息
Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI 48109-1048, USA.
出版信息
J Photochem Photobiol B. 2011 Jul-Aug;104(1-2):179-90. doi: 10.1016/j.jphotobiol.2011.01.015. Epub 2011 Jan 21.
The minireview presented here summarizes current information on the structure and function of PsbO, the photosystem II (PSII) manganese-stabilizing protein, with an emphasis on the protein's assembly into PSII, and its function in facilitating rapid turnovers of the oxygen evolving reaction. Two putative mechanisms for functional assembly of PsbO, which behaves as an intrinsically disordered polypeptide in solution, into PSII are proposed. Finally, a model is presented for the role of PsbO in relation to the function of the Mn, Ca(2+), and Cl(-) cofactors that are required for water oxidation, as well as for the action of hydroxide and small Mn reductants that inhibit the function of the active site of the oxygen-evolving complex.
本文综述了 PsbO（光系统 II 锰稳定蛋白）的结构和功能的最新信息，重点介绍了该蛋白在光系统 II 中的组装及其在促进氧释放反应快速周转中的作用。提出了两种将在溶液中表现为固有无序多肽的 PsbO 功能组装到光系统 II 中的假设机制。最后，提出了一个模型，用于描述 PsbO 在与水氧化所需的 Mn、Ca(2+)和 Cl(-)辅助因子的功能以及抑制氧释放复合物活性位点功能的氢氧化物和小 Mn 还原剂的作用之间的关系。
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