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The pH-Induced Helix-Coil Transition of Poly-L-lysine and Poly-L-glutamic Acid and the 238-mμ Dichroic Band

✍ Scribed by Myer, Yash P.


Book ID
127121178
Publisher
American Chemical Society
Year
1969
Tongue
English
Weight
554 KB
Volume
2
Category
Article
ISSN
0024-9297

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## Abstract Poly(L‐lysine) of various molecular weights between 2700 and 475,000 was spin‐labeled. From the electron spin resonance spectra, the degree of freedom of the nitroxide was determined by calculation of the rotational correlation time as the poly(L‐lysine) underwent the pH‐induced random

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Water-insoluble films of poly-L-lysine, crosslinked with formaldehyde, were suspended in aqueous media and their relative lengths measured as a function of pH. A sharp transition of the polymer was observed in the pH range which corresponded with that observed in polylysine solutions by optical rota