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Raman and normal mode studies of the polypeptide chain conformations in crystalline magnesium and calcium poly l glutamates


, : Raman and normal mode studies of the polypeptide chain conformations in crystalline magnesium and calcium poly l glutamates. Spectrochimica Acta Part A Molecular Spectroscopy 41(1-2): 205-208

An analysis of the Raman spectra of dry crystalline magnesium and calcium poly(L-glutamate)s, based on a normal mode calculation of .alpha.-helical poly(L-glutamate), shows that the polypeptide chains in both salts have an .alpha.-helix conformation. In the wet crystalline state, chain conformation is also present for the calcium salt.

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