Abstract
The conformational properties of poly(α-L-aspartic acid) (L-Asp)n have been investigated in water, in deuterium oxide and also in the solid state, by Raman scattering. The conformational transition induced by changing the pH of the solutions has been given special attention. The spectra exhibit a mixture of different conformations. Random-coil and β-antiparallel pleated-sheet conformations exist in both acidic and ionized forms of the polyacid. In addition a local β1 helical conformation has been detected in the ionized form. The α helical conformation appeared as the acidic form only.
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Lagant, P., Vergoten, G., Loucheux, C. et al. Study of Poly(L-aspartic acid). I. Laser Raman Spectrometry. Polym J 11, 345–351 (1979). https://doi.org/10.1295/polymj.11.345
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DOI: https://doi.org/10.1295/polymj.11.345
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