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. Author manuscript; available in PMC: 2010 Jul 12.
Published in final edited form as: J Phys Chem B. 2009 Nov 26;113(47):15679–15691. doi: 10.1021/jp9072203

Figure 4.

Figure 4

Parameters extracted from the 2D IR spectra. The frequencies, inhomogeneous linewidths, and anharmonicities are plotted for the unlabeled β-sheet feature (a–c) and the isotope labeled feature (d–f). The normalized xAB and xAC cross-peak intensities are plotted in parts g and h for both perpendicular (black) and parallel (gray) spectra. Label intensities and the xAC cross-peak scaled to the geometric mean of its parent features are plotted in parts h and i. Gray boxes designate regions of β-sheet structure as determined by ssNMR.