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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 3.

Figure 3

Perpendicular 2D IR spectra for the seven isotopically labeled residues. Spectra are normalized to the β-sheet fundamental intensity. The xAB cross-peak is magnified 10 times. Contours are evenly spaced from 50% of the minimum to 50% of the maximum, with zero contours removed to reduce noise.