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An analysis of the amide I mode in the vibrational spectra of unordered polypeptides and proteins (1978)

Painter, P. C. ; Coleman, M. M.

New York : Wiley-Blackwell

Biopolymers 17 (1978), S. 2475-2484

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ISSN: 0006-3525

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The difference in the observed frequency of the amide I mode between the Raman and ir spectra of many unordered polypeptides is interpreted in terms of a model in which sequences of amide groups have similar φ, ψ angles. The splittings due to intramolecular interactions for the infinite helices generated by all φ, ψ angles are calculated by assuming transition dipole coupling. The effect of finite sequence length and distortions are then considered. This hypothesis accounts for the general features of the amide I mode of unordered polypeptides.

Additional Material: 3 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/bip.1978.360171014

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