Light-Induced Denaturation of Bacteriorhodopsin Just abobe Melting Point of Two-Dimensional Crystal

DOI Web Site BIBCODE 被引用文献12件 参考文献32件
  • Itoh Hiroyasu
    Tsukuba Research Laboratory, Hamamatsu Photonics K.K., Tokodai 5–9–2, Ibaraki 300–26
  • Etoh Akinori
    Faculty of Technology, Department of Biotechnology, Tokyo University of Agriculture and Technology, Nakacho 2–24–16, Koganei, Tokyo 184
  • Mitaku Shigeki
    Faculty of Technology, Department of Biotechnology, Tokyo University of Agriculture and Technology, Nakacho 2–24–16, Koganei, Tokyo 184

書誌事項

タイトル別名
  • Light-Induced Denaturation of Bacteriorhodopsin Just above Melting Point of Two-Dimensional Crystal.
  • Light-Induced Denaturation of Bacterior
公開日
1997
DOI
  • 10.1143/jpsj.66.975
公開者
一般社団法人 日本物理学会

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説明

The denaturation kinetics of bacteriorhodopsin induced by light irradiation was measured in the temperature range between 80 and 86°C, which was just above the melting point of the two-dimensional crystal composed of bacteriorhodopsin molecules in the purple membrane. Bacteriorhodopsin was stable in the dark but gradually denatured under the irradiation of visible light longer than 520, nm. Analyzing the time course of the light-induced denaturation phenomenon, the kinetic constant of the denaturation from a photointermediate state was estimated. The temperature dependence of the kinetic constant lead to the effective activation energy of about 41, kcal/mol. The stability of a photointermediate state was discussed on the basis of the light-induced denaturation behavior.

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