Tetrahedron p. 3077 - 3086 (1995)
Update date:2022-07-30
Topics:
Bobde
Beri
Rawale
Satyanarayana
Durani
The tetrapeptide Boc-L-Glu-Ala-Leu-LysNHMe (1) reveals a random coil conformation, based on its Glu(γ) and Lys(ε) methylene proton aniosotropic shift, GluNH chemical shift, NOEs in the chloroform-DMSO (6:1), and its amide proton temperature coefficients in DMSO, while on similar considerations, the diastereomer Boc-D-Glu-Ala-Leu-LysNHMe (2) is characterized as a highly ordered 3/10 type distorted protohelix with a remarkably stable intramolecular salt bridge under these solvent conditions.
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