[Energizing of F1-ATPase after irradiation with visible light]

It was shown that ATP synthesis by F1-ATPase sensitized by visible light was combined with oxidation of SH groups and decrease of initial flavin fluorescence in the F1-ATPase preparation. It was suggested that it was an endogenous flavin group that regulated redox transitions between SH-S-S groups which was essential for the catalysis in vivo.