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The photosynthetic reaction centers (RC) of the green bacterium Chloroflexus aurantiacus have been investigated by spectral and electrometrical methods. In these reaction centers, the secondary quinone was found to be reconstituted by the addition of ubiquinone-10. The equilibrium constant of electron transfer between primary (Q A ) and secondary (Q B ) quinones was much higher than...
The interaction of the photosynthetic reaction center (RC)-generated ubiquinol with the ubiquinone-reducing center C of ubiquinol:cytochrome c 2 -oxidoreductase (bc 1 -complex) has been studied electrometrically in Rhodobacter sphaeroides chromatophores. The addition of myxothiazol inhibited the ubiquinol-oxidizing center Z, suppressing the phases of membrane potential generation by...
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