Fourier Transform Infrared Emission Spectroscopy in the Study of Biological Molecules

—Infrared spectroscopy is a powerful analytical method that is not completely developed in relation to biological systems as yet. Previously, this method has been successfully used to analyze secondary structures. This mini-review shows the latest advances in the study of proteins using the Fourier transform infrared technique. The application of Fourier transform infrared emission spectroscopy to the study of photophysical and photochemical reactions in photoreceptor proteins is discussed.