Structural characterization of the cyanophycin granule polypeptide of Anabaena cylindrica by circular dichroism and raman spectroscopy
β Scribed by Robert D. Simon; Nelson H. Lawry; George L. Mclendon
- Book ID
- 113126336
- Publisher
- Elsevier Science
- Year
- 1980
- Weight
- 305 KB
- Volume
- 626
- Category
- Article
- ISSN
- 0005-2795
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Tripeptidesserve as model systems for understanding the so-called random-coil state of peptides and proteins. While it is well known that polyproline or proline-rich polypeptides adopt the very regular polyproline-II (PPII) or left-handed 3(1)-helix conformation, it was thus far not clear whether th
## Abstract Six sequential polytetrapeptides containing equimolar amounts of tyrosine, glutamic acid, alanine, and glycine were characterized by CD and difference spectroscopy over a wide range of pH. As the pH was lowered from physiological values, each of the polymers underwent pHβsensitive trans