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Raman spectrum of the right‐handed α‐helix of poly‐ L ‐alanine
Author(s) -
Koenig J. L.,
Sutton P. L.
Publication year - 1969
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.1969.360080203
Subject(s) - raman spectroscopy , chemistry , excited state , infrared , spectrum (functional analysis) , alanine , vibrational spectrum , molecular physics , nuclear magnetic resonance , atomic physics , optics , physics , amino acid , quantum mechanics , biochemistry
The laser‐excited Raman vibrational spectrum of poly‐ L ‐alanine has been obtained. The Raman spectrum is compared with the infrared spectrum and vibrational frequencies calculated from normal coordinate analysis. The symmetric modes of the α‐helix appear with strong intensity in the Raman spectrum. A large number of skeletal modes are obtained in this Raman spectrum for the first time.