Tryptophan Neutral Radical Brings along Photochemical Crystallization

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The mechanism of the photochemically induced nucleation of lysozyme was investigated. Radical cations and neutral radicals of tryptophan residue of lysozyme were observed by transient absorption measurements. The radical cation was found to be in equilibrium with the neutral radical, and the p<I>K</I><SUB>a</SUB> of the radical cation in UV–vis wide range buffer solution was estimated to be ca. 3.2. The dimer formation was confirmed by SDS-PAGE for the solutions with pH value higher than this p<I>K</I><SUB>a</SUB> value. The photochemically induced nucleation was also observed for these solutions. The number of crystals increased with increase of the dimer.

収録刊行物

  • Chemistry letters

    Chemistry letters 37(4), 458-459, 2008-04-05

    The Chemical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10021079817
  • NII書誌ID(NCID)
    AA00603318
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    03667022
  • データ提供元
    CJP書誌  J-STAGE 
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