<研究報告>亜クロロプラスト粒子におけるプラストシアニンの光酸化-暗還元反応

概要

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The light-induced oxidation-reduction reactions of plastocyanin in subchloroplast particles obtained from spinach chloroplasts by sonic treatment were investigated. System I-enriched subchloroplast particles, 180P were active in the light-induced oxidation of plastocyanin, while larger particles (chloroplasts, 20P. and 80P) were in-active. The plastocyanin-reducing substance which stimulated both of photooxidation of plastocyanin and the reduction of plastocyanin in the dark was isolated from spinach chloroplasts. The reducing substance increased the photooxidation of P700 but did not affect the rate of P700^+ reduction in the dark. By adding reduced plastocyanin the rate of reduction of P700^+ in the dark was increased. The reducing substance may serve as an electron carrier from the primary reductant X^- to plastocyanin or to an electron donor to P700^+. Some properties of the reducing substance seems to be similar to CRS or FRS. Possible chemical nature of the substance is discussed.
福岡女子大学の論文
1982-01-30