Photo-Activation of Respiration in Degenerated Sperm of Echiuroid, Oyster and Sea Urchin(Developmental Biology)
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概要
- 論文の詳細を見る
In sperm of echiuroid, oyster and sea urchin, which had been incubated in sea water at 20℃ for 15 hr, the respiratory rate, which was lower than in fresh sperm, was enhanced by light at 430, 530 and 570 nm more strongly than at the other examined wavelengths. In fresh sperm, respiration was not affected by light. This incubation resulted in marked decrease in the activity of NADH cytochrome c reductase and the amount of cytochrome b in these sperm, more evidently than appreciable decrease in the cytochrome c oxidase activity and the amount of cytochrome aa_3. NADH cytochrome c reductase was activated by light with peaks of photo-activation at 430, 530 and 570 nm in fresh and incubated sperm. A marked decrease in the cytochrome b amount during incubation probably makes the reactions, such as catalyzed by NADH cytochrome c reductase, rate-limiting in mitochondrial respiratory chain, to reduce the respiratory rate in incubated sperm. Photo-activation of these enzyme reactions, in which cytochrome b is involved, seems to enhance the respiratory rate, only when they become rate-limiting. Tunicate sperm, which NADH cytochrome c reductase was insensitive to light, did not exhibit photo-activation of respiration, even after a long time incubation.
- 社団法人日本動物学会の論文
- 1999-04-15
著者
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Fujiwara Akiko
Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima Uni
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Fujiwara A
Kanagawa Univ. Kanagawa Jpn
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Fujiwara A
Department Of Biology School Of Education Waseda University
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Fujiwara Akiko
Department Of Applied Microbiology Nippon Roche Research Center
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Yasumasu Ikuo
Department of Biology, School of Education, Waseda University
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Yasumasu I
Department Of Biology School Of Education Waseda University
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Yasumasu Ikuo
Department Of Biology Colege Of General Education University Of Tokyo
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Tazawa Eigoro
Biological Institute, Faculty of Science, Yokohama City University
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Tazawa E
Kanagawa Univ. Kanagawa Jpn
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Tazawa Eigoro
Biological Institute Faculty Of Literature And Science Yokohama City University
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Kamata Y
Advanced Research Institute For Science And Engineering Waseda University
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KAMATA Yasuyuki
Advanced Research Institute for Science and Engineering, Waseda University
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Kamata Yasuyuki
Advanced Research Institute For Science And Engineering Waseda University
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