The Behaviour of the Copolymer of L-Proline and <I>O</I>-Benzyl-L-Tyrosine in a <I>n</I>-Propanol and Water System
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概要
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A copolymer consisting 95.8% of L-proline and 4.2% of <I>O</I>-benzyl-L-tyrosine was transformed in conformation from Form I to Form II as the propanol content changed from 100% to 74%. In Form I, the copolymer took a rod-like structure like that of poly-L-proline Form I, and the <I>O</I>-benzyl-L-tyrosyl residue moved independently of the molecular motion of the copolymer. On the other hand, the copolymer became flexible in Form II and the components associated with each other, forming an amorphous aggregation, when the propanol content decreased further, below the transition point. The hydrophobic interaction between the <I>O</I>-benzyl-L-tyrosyl side chain and the prolyl residue was the main factor which made the components of the copolymer associate with each other and form an amorphous aggregation. This was verified by a fluorescence study of the <I>O</I>-benzyl-L-tyrosyl residue.
- 公益社団法人 日本化学会の論文
著者
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Iio Takayoshi
Department Of Physics Faculty Of Science Nagoya University
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Takahashi Sho
Department Of Applied Physics Tokai University
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Takahashi Sho
Department of Physics, Faculty of Science, Nagoya University
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Kobayashi Shoyu
Institute of Molecular Biology, Faculty of Science, Nagoya University
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