Figure 3.

(a) Linear infrared spectra of ELP90 in D₂O (20 mg/mL) for temperatures between 296 and 317 K. The top panel illustrates the decomposition of the spectrum at 313 K (black squares) into three Gaussian bands (blue lines). The red solid line represents the sum of the three Gaussians. (b) Relative contributions of the three bands to the amide I′ spectrum of ELP90 as a function of temperature. The relative contribution is expressed as the integrated intensity of the respective band divided by the integrated intensity of the amide I′ spectrum.