In this paper two points are considered: the methods of evaluating the helical content 8 and the calculation of the parameters of the transition from experimental data and its interpretation. The parameter AH obtained is in good agreement with the calorimetric one and v is found to be independent of
Helix–coil transition in poly-ε-carbobenzoxy-L-lysine
✍ Scribed by F. E. Karasz; J. M. O'Reilly; H. E. Bair
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1965
- Tongue
- English
- Weight
- 376 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0006-3525
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## Abstract The thermal helix–coil transition of poly(γ‐benzyl L‐glutamate‐__co__‐ε‐carbobenzoxy‐L‐lysine) copolypeptides was studied in solvent mixtures of different compositions. The cooperativity parameter __v__ changes linearly with polymer (and solvent) composition, whereas the heat of the tra
## Abstract The heal of solution of Poly‐ε‐carbobenzoxy‐L‐lysine and of a series of its copolymers with phenylalanine was measured as a function of solvent composition. The enthalpy change of the helix‐to‐coil transition was estimated for the various cases. The previous findings that side chains do
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