[A new methodical approach to the determination of the quantum yield of the photoelectric conversion of electronic excitations in reaction centers of purple bacteria].

A new methodical approach has been developed, which enables one to determine with a high precision (approximately 1.5%) the quantum yield of energy conversion in reaction centers isolated from purple bacterium. This parameter for reaction centers from Rhodospirillum rubrum was estimated to be 93.5 +/- 1,5%. Our methodical approach makes it possible to calculate quantum yield values for complete photosystems of purple bacteria.