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

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dc.contributor.author Tokmakoff, Andrei
dc.contributor.author Jones, Kevin C.
dc.contributor.author Reppert, Mike E.
dc.contributor.author Peng, Chunte Sam
dc.contributor.author Baiz, Carlos R.
dc.date.accessioned 2015-04-07T21:24:18Z
dc.date.available 2015-04-07T21:24:18Z
dc.date.issued 2012-03-01
dc.identifier.uri http://hdl.handle.net/1721.1/77962
dc.identifier.uri http://hdl.handle.net/1721.1/96430
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 http://creativecommons.org/licenses/by-nc-sa/3.0/us/ *
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


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