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Kinetics of the helix-coil transition in aqueous poly(L-glutamic acid)

✍ Scribed by Barksdale, A. D.; Stuehr, J. E.

Book ID
121408599
Publisher
American Chemical Society
Year
1972
Tongue
English
Weight
602 KB
Volume
94
Category
Article
ISSN
0002-7863

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## Abstract A polarimetric electric‐field‐jump relaxation apparatus is described and used to determine the relaxation spectrum for the helix–coil transition of poly(α,L‐glutamic acid) in water at 24°C. A maximum relaxation time of 1.7 μc occurs at the transition midpoint (pH = 5.9) yielding a rate

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Potentiometric titrations and some complementary optical rotation data are presented for solutions of poly(L-glntamic acid) (PGA) in several H,O-ethanol mixtnres. The data allow the determination of the intrinsic p K (pKo), slope of the apparent pK (pKaPp), versus degree of ionization curves and of