Skip to main content

Evidence of A and E 1 Normal Mode Absorbances in the Infrared Spectrum of Hemoglobin

Buy Article:

$29.00 plus tax (Refund Policy)


In an FT-IR study of the secondary structure of proteins, several concentrations, cell pathlengths, resolution values, and machine parameters were investigated. During this investigation we observed that 1-cm−1 resolution spectra of hemoglobin enhanced by second derivatives revealed an additional band in the α-helix region. Krimm and co-workers predicted the existence of two absorbances in the infrared amide I region (1600-1700 cm−1) of α-helical proteins in solution that correspond to the A and E 1 amide carbonyl vibrational modes. However, they observed only one band in the α-helix region at 2 cm−1 resolution.

Keywords: FT-IR; Fourier transform; Protein

Document Type: Short Communication


Affiliations: U.S. Department of Agriculture, Agricultural Research Service, Northern Regional Research Center, 1815 North University Street, Peoria, Illinois 61604

Publication date: June 1, 1990

More about this publication?

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more