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題 名 | 蛋白質磷酸化調控高等植物類囊膜上葉綠餅的摺疊機制 |
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作 者 | 楊棋明; 陳榮銳; | 書刊名 | 中華農學會報 |
卷 期 | 161 1993.03[民82.03] |
頁 次 | 頁33-46 |
分類號 | 373.141 |
關鍵詞 | 高等植物類; 蛋白質; 葉綠餅; 摺疊機制; 磷酸化; 囊膜; |
語 文 | 中文(Chinese) |
中文摘要 | 過去十五年在植物光合作用的研究有甚多進步。其中之一是發現位於類囊膜上的色素-蛋白質複合體在結構上和功能上是側向隔離或不均勻分佈;其中之二是發現類囊膜上LHC II蛋白質磷酸化是調控PS I和PS II之間能量再分配的短程機制。類囊膜組成份的異質分佈和葉綠餅的摺疊被認為是高等植物提高捕光能力和光合效率的適應策略。本文將介紹五種假說,以解釋鎂離子或蛋白質磷酸化如何調控光合作用膜的形態和功能。所有假說都建基在蛋白質磷酸化所引起的表面電價之變化上,和建基在表面電價改變所引起的巨大分子之側向位移上。 |
英文摘要 | During the past fifteen years one of the most exciting developments in photosynthesis has been the discovery of the pronounced structural and functional lateral segregation and heterogeneity of proteins and pigment-protein complexes in the thylakoid membranes. A second important discovery has been the short-term balance mechanism of energy transduction and distribution between PS I and PS II by thylakoid protein phosphorylation, which in turn affects grana stacking and thylakoid morphology. The lateral segregation and grana stacking of thylakoid membranes in higher plants are thought to be an adaptive strategy by which green plants maximize their photosynthetic efficiency and light-harvesting capacity. Five hypotheses will be introduced to explain how magnesium ion or protein phosophorylation controls the function of the photosynthetic bed. All hypotheses, except ionic hypothesis, were established on the basis of surface charge changes caused by protein phosphorylation and lateral migration of macromolecules caused by surface charge changes. |
本系統中英文摘要資訊取自各篇刊載內容。