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首页> 外文会议>International Congress of Photosynthesis >FUNCTIONAL ANALYSIS OF THE PsbP-LIKE PROTEIN (S111418) IN SYNECHOCYSTIS SP. PCC 6803
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FUNCTIONAL ANALYSIS OF THE PsbP-LIKE PROTEIN (S111418) IN SYNECHOCYSTIS SP. PCC 6803

机译：SyneChocystis Sp中PSBP样蛋白（S111418）的功能分析。 PCC 6803.

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In algae and higher plants, the oxygen-evolving complex (OEC) of Photosystem II (PS II) is composed of three extrinsic proteins, PsbO, PsbP and PsbQ, and several ions including the Mn-cluster, Ca~(2+) and Cl~-.These proteins attach to Photosystem IIon the luminal side of the thylakoid membrane. The PsbP protein, along with the PsbQ protein, are known to act as regulators of the Ca~(2+) and Cl~- concentrations, that are requited for effective oxygen evolution in Photosystem II. However, detailed functions of these proteins remain to be elucidated. In cyanobacteria so far the common view was that neither PsbP nor PsbQ are present and instead their functions are replaced by a 12kDa protein (PsbU) and a c-type cytochrome (PsbV). Recent reports, however, show that proteins with domains of PsbQ (Kashino et al 2002) and PsbP (Thornton et al 2004) (PsbQ-like and PsbP-like protein) are also associated with Photosystem II of cyanobacteria and have similar functions as in higher plants. The PsbP-like protein was found to bind to the PS II reaction center substoichiometrically (Thornton et al 2004).
机译：在藻类和更高的植物中，照射系统II（PS II）的氧不变复合物（OEC）由三种外在蛋白质，PSBO，PSBP和PSBQ组成，以及包括Mn-Cluster，Ca〜（2+）的几个离子和几个离子Cl〜-.这些蛋白质附着在囊体膜的光照侧面。已知PSBP蛋白以及PSBQ蛋白作为Ca〜（2+）和Cl〜浓度的调节剂，以便在照相系统II中得到有效的氧气演化。然而，这些蛋白质的详细功能仍然阐明。在迄今为止的胞间曲细胞中，普遍认为，既不存在PSBP也不存在PSBQ，而是由12KDA蛋白（PSBU）和C型细胞色素（PSBV）取代它们的功能。然而，最近的报告显示，具有PSBQ（Kashino等人2002）和PSBP（Thornton等人2004）（PSBQ等和PSBP样蛋白）的蛋白质也与蓝藻的照相II有关，并且具有类似的功能更高的植物。发现PSBP样蛋白质与PS II反应中心替代（Thornton等人2004）结合。

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