Random-coiled conformation of polypeptide chains |
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| Authors: | Masahito Oka Yoshihiro Baba Akihiro Kagemoto Akio Nakajima |
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| Affiliation: | (1) Department of General Education, Osaka Institute of Technology, Omiya, Asahi-ku, 535 Osaka, Japan;(2) Department of Applied Chemistry, Osaka Institute of Technology, Omiya, Asahi-ku, 535 Osaka, Japan |
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| Abstract: | Summary Random-coiled conformation of poly(L-leucine), which has  -branched side-chain, was theoretically analyzed by a conformational energy calculation based on intra-residue interactions. Calculated characteristic ratio 7.62 was obtained by using the transformation matrix statistically averaged over the entire side-chain conformational space of L-Leu residue. This value is smaller than those of poly(L-phenylalanine) (11.24) and poly(L-tyrosine) (12.33) which have -branched side-chain. |
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