Abstract
AbstractInfrared studies of the amide I band of transferred films of β‐lactoglobulin‐B spread on 0.5 M KC1 have been obtained via the multiple internal reflection (MIR) technique. The spectra indicate that the conformations of the films change with surface pressure. The data are consistent with a denatured molecule as the predominant species at high area per molecule and a species whose secondary structure is similar to that of the native molecule at high degree of compression. The transition may be reversed by re‐expansion of the film after compression. Approximately equal amounts of native‐type and denatured type spectral components are found at 6 dynes/cm at room temperature.
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