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Vibrational CD of polypeptides. X. A study of α-helical oligopeptides in solution

✍ Scribed by S. C. Yasui; T. A. Keiderling; Ryoichi Katakai

Publisher
Wiley (John Wiley & Sons)
Year
1987
Tongue
English
Weight
310 KB
Volume
26
Category
Article
ISSN
0006-3525

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✦ Synopsis

Synopsis

We have measured the vibrational CD (VCD) of a series of hetermligopeptides-onitrophenylsulfenyl(L-Met-L-Met-L-Leu),-OEt, n = 6,8,10,11--in the amide A, I, and I1 regions.

These spectra are identical in shape and magnitude, within our signal to noise limits. The VCD in each band are of exactly the shape expected for a right-handed a-helix and imply that VCD of the polypeptide a-helix is relatively unaffected by chain length down to the 18-subunit level.

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