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Journal of Biomedical Optics

Low-frequency vibrational spectroscopy of proteins with different secondary structures
Author(s): Irina A. Balakhnina; Nikolay N. Brandt; Andrey Y. Chikishev; Anna A. Mankova; Irina G. Shpachenko
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Paper Abstract

Fourier transform infrared (FTIR) and Raman spectra of proteins with significantly different structures are measured in a spectral interval of 50 to 500    cm 1 and noticeable spectral differences are revealed. Intensities of several spectral bands correlate with contents of secondary structure elements. FTIR spectra of superhelical proteins exhibit developed spectral features that are absent in the spectra of globular proteins. Significant differences of the Raman spectra of proteins that are not directly related to the difference of the secondary structures can be due to differences of tertiary and/or quaternary structure of protein molecules.

Paper Details

Date Published: 25 March 2017
PDF: 6 pages
J. Biomed. Opt. 22(9) 091509 doi: 10.1117/1.JBO.22.9.091509
Published in: Journal of Biomedical Optics Volume 22, Issue 9
Show Author Affiliations
Irina A. Balakhnina, M.V. Lomonosov Moscow State Univ. (Russia)
Nikolay N. Brandt, M.V. Lomonosov Moscow State Univ. (Russia)
Andrey Y. Chikishev, M.V. Lomonosov Moscow State Univ. (Russia)
Anna A. Mankova, M.V. Lomonosov Moscow State Univ. (Russia)
Irina G. Shpachenko, M.V. Lomonosov Moscow State Univ. (Russia)


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