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IR (Vibrational) CD of Peptide Beta-Turns: A Theoretical and Experimental Study of cyclo-(-Gly-Pro-Gly-D-Ala-Pro-)

IR (Vibrational) CD of Peptide Beta-Turns: A Theoretical and Experimental Study of cyclo-(-Gly-Pro-Gly-D-Ala-Pro-)

H R Wyssbrod, M Diem

Biopolymers. 1992 Sep;32(9):1237-42.

PMID: 1420990

Abstract:

IR vibrational CD (VCD) has been observed for the cyclic pentapeptide cyclo-(-Gly-Pro-Gly-D-Ala-Pro-) in solution in CDBr3. The observed VCD spectra do not resemble the VCD features of any of the previously reported peptide secondary structures, such as alpha-helical, "random coil," or sheet structures, and might be due to the beta-turn contained in this molecule. To shed light onto the origin of the observed spectra, VCD intensity calculations, based on the solution and solid-state structures of cyclo-(-Gly-Pro-Gly-D-Ala-Pro-), have been carried out. In addition, calculated VCD data for pure beta-turns are discussed.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP3705279	Cyclo-Gly-Pro		3705-27-9	Price

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