Characterization of the photoreduction of the secondary quinone QB in the photosynthetic reaction center from rhodobacter capsulatus with FTIR spectroscopy

Vibrational spectroscopy as a tool for probing protein function

Vibrational spectroscopy has become increasingly important as a tool for understanding the mechanisms of photosystem II, phytochrome and terminal oxidases. More general enzymatic or receptor systems have been studied, opening a new field of applications. Femtosecond infrared pump/probe studies of the important amide-I band seem to provide a basis for its molecular and structural interpretation.