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Hole Trapping of G-Quartets in a G-Quadruplex

Authors

  • Dr. Jungkweon Choi,

    1. The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047 (Japan)
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  • Jongjin Park,

    1. Department of Chemistry, Yeungnam University, Gyeongsan City, Gyeong-buk, 712-749 (Republic of Korea)
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  • Atsushi Tanaka,

    1. The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047 (Japan)
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  • Dr. Man Jae Park,

    1. The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047 (Japan)
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  • Dr. Yoon Jung Jang,

    1. Department of Chemistry, Yeungnam University, Gyeongsan City, Gyeong-buk, 712-749 (Republic of Korea)
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  • Dr. Mamoru Fujitsuka,

    1. The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047 (Japan)
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  • Prof. Dr. Seog K. Kim,

    Corresponding author
    1. The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047 (Japan)
    2. Department of Chemistry, Yeungnam University, Gyeongsan City, Gyeong-buk, 712-749 (Republic of Korea)
    • The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047 (Japan)
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  • Prof. Dr. Tetsuro Majima

    Corresponding author
    1. The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047 (Japan)
    • The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047 (Japan)
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  • This work has been partly supported by a Grant-in-Aid for Scientific Research (projects 22245022, 24550188, and others) from the Ministry of Education, Culture, Sports, Sciences and Technology (MEXT) of the Japanese Government. T.M. thanks the World Class University program funded by the Ministry of Education, Science and Technology through the National Research Foundation of Korea (grant number R31-2011-000-10035-0) for support. S.K.K. acknowledges partial support for this work by the Korea Research Foundation (grant number 2012-008875).

Abstract

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Hole trapping: The hole transfer and trapping in a G-quadruplex has been investigated using laser flash photolysis and pulse radiolysis. The results show that the charge separation in the G-quadruplex takes place efficiently between riboflavin and G-bases because of the excellent hole-trapping ability of planar G-quartets.

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