Induced Circular Dichroism of Benzyl Chromophores Bound to Helical Polypeptides

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概要

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• Extrinsic optical activity was observed for symmetric side chain chromophores in helical polypeptides. Poly-β-benzyl-L-aspartate, poly-β-<I>p</I>-nitrobenzyl-L-aspartate and poly-γ-<I>p</I>-nitrobenzyl-L-glutamate gave induced circular dichroism in the wavelength regions corresponding to the absorption bands of the benzyl and the <I>p</I>-nitrobenzyl chromophores of the side chains in their dilute solutions. Moreover, poly-γ-benzyl-D-glutamate gave induced circular dichroism due to the benzyl chromophore in its concentrated solutions which formed a liquid crystalline phase. The extrinsic optical activity thus observed was explained as the consequence of the loss of the rotational freedom of the chromophores relative to the α-helical structure and to the cholesteric helical structure of the polypeptides.

• 公益社団法人 日本化学会の論文

著者

• Hatano Masahiro

  Chemical Research Institure Of Non-aqueous Solutions Tohoku University

• Takagi Shoji

  Chemical Research Institute of Non-Aqueous Solutions, Tohoku University

• Nomori Hiroyuki

  Chemical Research Institute of Non-Aqueous Solutions, Tohoku University

• Tsuchihashi Nobuaki

  Chemical Research Institute of Non-Aqueous Solutions, Tohoku University

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