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
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
The objective has been to establish if those ions which are known to change the stability of the struct,ure of proteins, have any influence on the properties of ionizable polypeptides. Potentiometric titrations and complementary optical rotation data are presented for aqueous solutions of poly-L-lys
Thermal and charge induced random coil to a-helii transitions of poly-cglutamic acid (PGA) were measured by optical rotatory dispersion in various solvents. The data of PGA in 0.1M NaCl were analyzed by the Zimm-Rice theory. Enthalpy and entropy changes for the coil-to-helix transition in the unioni
## 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
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