Advanced Search

Coherent two-dimensional infrared spectroscopy: Quantitative analysis of protein secondary structure in solution

Research and Teaching Output of the MIT Community

Show simple item record Tokmakoff, Andrei Jones, Kevin C. Reppert, Mike E. Peng, Chunte Sam Baiz, Carlos R. 2015-04-07T21:24:18Z 2015-04-07T21:24:18Z 2012-03-01
dc.description.abstract We present a method to quantitatively determine the secondary structure composition of globular proteins using coherent two-dimensional infrared (2DIR) spectroscopy of backbone amide I vibrations (1550–1720 cm−1). Sixteen proteins with known crystal structures were used to construct a library of 2DIR spectra, and the fraction of residues in α-helix, β-sheet, and unassigned conformations was determined by singular value decomposition (SVD) of the measured two-dimensional spectra. The method was benchmarked by removing each individual protein from the set and comparing the composition extracted from 2DIR against the composition determined from the crystal structures. To highlight the increased structural content extracted from 2DIR spectra a similar analysis was also carried out using conventional infrared absorption of the proteins in the library. en_US
dc.description.sponsorship National Science Foundation (CHE-0616575 and CHE-0911107). Agilent Technologies en_US
dc.publisher Royal Society of Chemistry en_US
dc.rights Attribution-NonCommercial-ShareAlike 3.0 United States *
dc.rights.uri *
dc.subject spectroscopy, ultrafast, two-dimensional infrared, protein structure en_US
dc.title Coherent two-dimensional infrared spectroscopy: Quantitative analysis of protein secondary structure in solution en_US
dc.type Dataset en_US
dc.identifier.citation Baiz, Carlos R. et al. “Coherent Two-dimensional Infrared Spectroscopy: Quantitative Analysis of Protein Secondary Structure in Solution.” The Analyst 137.8 (2012): 1793 en_US

Files in this item

Name Size Format Description
Protein_2DIR_Spec ... 2.033Mb application/zip Experimental FTIR and 2D IR Spectra

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-ShareAlike 3.0 United States Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 3.0 United States