✍ Scribed by Pavlína Novotná; Marie Urbanová
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📜 SIMILAR VOLUMES
We have measured vibrational CD spectra in the 3600-1250 cm-I region of two monodisperse, protected octapeptides, which form right-handed 3,,-helices in CDC13 solution. The spectra are similar in sign pattern to those obtained for right-handed a-helices in solution but are smaller in magnitude and,
## Abstract Vibrational CD (VCD) and ir absorption data are reported for a series of films of Boc‐(L‐Ala)~__n__~‐OMe homo‐oligopeptides (__n__ = 3–7) in the amide I and A regions. The data evidenced a sharp change between __n__ = 3 and __n__ = 4, which parallels the onset of β‐structure formation,
## Abstract Vibrational CD (VCD) of amides A, I, and II vibrations of a variety of polypeptide films have been measured. VCD of films of α‐helical and β‐sheet structures are compared in the three regions. Reproducible spectra could only be obtained for thin films free of orientation dependence. The