Abstract
Site-specific 18O substitution of two amino acids that are in a close spatial vicinity, but far apart in the primary sequence, exhibits characteristic IR fingerprints; the corresponding spectral shifts of the absorption bands are shown color-coded in the figure. This approach can be used to obtain detailed structural information, for example, about membrane proteins which are difficult to crystallize.
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More From: Chemphyschem : a European journal of chemical physics and physical chemistry
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