Buffer Effect on the Photoelectrochemical Response of Bacteriorhodopsin

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The photoelectrochemical response of bacteriorhodopsin (bR) was studied in buffered electrolyte solutions. The photocurrent intensity was inversely proportional to the buffer concentration in a wide range, and the response time became shorter with increasing buffer concentration. When plotted as a function of the electrolyte pH, the ratio of the peak photocurrent in the presence of a buffer to that in the absence of the buffer exhibited a minimum at a pH nearly equal to the pK′a of the buffer. These results are explained by invoking the buffering capacity, and are in line with the view that the transient bR photoresponse originates in the pH change near the electrode due to proton release/uptake by bR molecules.

収録刊行物

  • Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

    Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 15(4), 365-369, 1999-04

    社団法人 日本分析化学会

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各種コード

  • NII論文ID(NAID)
    10002419420
  • NII書誌ID(NCID)
    AA10500785
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09106340
  • NDL 記事登録ID
    4712445
  • NDL 雑誌分類
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL 請求記号
    Z54-F482
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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