ビタミンEの再生反応におけるトンネル効果  [in Japanese] Tunneling Effect in Regeneration Reactions of Vitamin E  [in Japanese]

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Author(s)

Abstract

Since a vitamin E radical produced by the antioxidant reaction of vitamin E causes damage to vital functions, ubiquinol and vitamin C regenerate a vitamin E molecule from a vitamin E radical <I>in vivo</I>. The kinetic studies of the regeneration reactions have been carried out in solutions by means of stopped-flow spectroscopy. Substantial deuterium kinetic-isotope-effects on the second-order rate constants have been observed in both the reactions of ubiquinol and vitamin C. Furthermore, a deviation from a linear relationship in the Arrhenius plot has been observed in the reaction of ubiquinol. These results suggest that the tunneling effect plays an important role in the regeneration reactions in various tissues and mitochondria.

Journal

  • Nihon Kessho Gakkaishi

    Nihon Kessho Gakkaishi 40(1), 119-123, 1998-02-28

    The Crystallographic Society of Japan

References:  40

Cited by:  1

Codes

  • NII Article ID (NAID)
    10002590483
  • NII NACSIS-CAT ID (NCID)
    AN00188364
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03694585
  • NDL Article ID
    4446298
  • NDL Source Classification
    ZM46(科学技術--地球科学--岩石・鉱物・鉱床)
  • NDL Call No.
    Z15-138
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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