Abstract

The solid-state 17O NMR spectra of L-alanine-residue containing polypeptides were measured by magic-angle spinning (MAS) at 25 kHz. NMR parameters such as the chemical shift, quadrupolar coupling constant and asymmetry parameter are obtained from the spectra. The relationship between the hydrogen-bonded structure and these NMR parameters is clarified. The hydrogen-bonding structures are related to the quadrupolar coupling constants and the chemical shift values.

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