Effect of Intracellular ATP Levels on the Light-Induced H^+ Efflux from Intact Cells of Cyanidium caldarium
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概要
- 論文の詳細を見る
The light-induced H^+ efflux observed at acidic pH in Cyanidium cells was shown to be an active H^+ transport depending on the intracellular ATP produced by cyclic photophosphorylation. Triton X-100 was found to act as an effective uncoupler in intact Cyanidium cells without collapsing the pH gradient across the plasma membrane. Triton X-100 at 0.015% significantly reduced the intracellular ATP levels, stimulated the p-BQ Hill reaction and completely inhibited the light-induced H^+ efflux. Inhibition of the H^+ efflux by Triton X-100 correlated well with the depression of the apparent rate of light-induced ATP synthesis as well as the decrease in the intracellular ATP level in light. The light-induced H^+ efflux was completely inhibited by diethylstilbestrol, a specific inhibitor of plasma membrane ATPase, without any changes in the intracellular ATP level, thereby suggesting the participation of the plasma membrane ATPase in the light-induced H^+ efflux.
- 日本植物生理学会の論文
著者
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Kura-Hotta Mariko
Department of Biology, Faculty of Sciences, University of Tokyo
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Enami Isao
Department of Biology, Faculty of Science, Science University of Tokyo
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Enami Isao
Department Of Biology Faculty Of Science Science University Of Tokyo
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Enami Isao
Fac. Sci. Sci. Univ. Tokyo
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Enami I
Fac. Sci. Sci. Univ. Tokyo
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Kura‐hotta M
Department Of Biology Faculty Of Sciences University Of Tokyo
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Kura-hotta Mariko
Department Of Biology Faculty Of Science Science University Of Tokyo
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