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Conformation study on poly(L-tyrosine) in dimethyl formamide by small-angle X-ray scattering

✍ Scribed by Fumiyuki Hamada; Yoshitaka Ishimuro; Toshio Hayashi; Akio Nakajima

Publisher
Wiley (John Wiley & Sons)
Year
1977
Tongue
English
Weight
527 KB
Volume
16
Category
Article
ISSN
0006-3525

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✦ Synopsis

Abstract

The size and shape parameters of poly(L‐tyrosine) in dimethyl formamide were investigated with fractionated samples of different molecular weight by small‐angle X‐ray scattering. The molecular weight, the radius of gyration of the molecule as a whole, the radius of gyration of the cross section, the mass per unit length, and the length of helix molecule were determined. The molecular conformations proposed by Applequist and Pao for poly(L‐tyrosine) were compared with the experimental results obtained. It was concluded that poly(L‐tyrosine) exists in a form of the right‐handed α‐helix in dimethyl formamide.

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