Dielectric and Nuclear Magnetic Resonance Studies of the Synthetic Polypeptides in the β-Form in the Solid State

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概要

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• Dielectric measurement of poly-S-carbobenzoxy-L-cysteine (PSCBLC) and nuclear magnetic resonance measurements of PSCBLC, poly-S-carbobenzoxyethyl-L-cysteine (PSCBELC) and poly-S-carbomethoxyethyl-L-cysteine (PSCMELC) were made. The activation energy obtained for the dielectric dispersion in PSCBLC which has benzyl groups in side chains was 50 kcal./mole, which is the same as is obtained for helical synthetic polypeptides with benzyl groups in side chains. In a temperature range from 77 to 370°K., rotation of the side chains was suggested as the mechanism of molecular motion in these β-forming polypeptides. The molecular motion for β-forming polypeptides may have no specific characteristics. Infrared spectrum analysis disclosed that PSCMELC existed in the antiparallel β-form.

• 社団法人応用物理学会の論文
• 1965-04-15

著者

• Kamashima Kazuo

  Biopolymer Laboratory Department Of Polymer Science Faculty Of Sciece Hokkaido University

関連論文

• Dielectric Studies of Synthetic Polypeptides in Solid State
• Dielectric Studies of Poly-γ-Benzyl-DL-Glutamate in Solid State
• Dielectric and Nuclear Magnetic Resonance Studies of the Synthetic Polypeptides in the β-Form in the Solid State
• Optical Rotatory Dispersion of the β-Form of Synthetic Polypeptides in Solution

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