Zannoni 1990 FEBS Lett

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Zannoni D, Moore AL (1990) Measurement of the redox state of the ubiquinone pool in Rhodobacter capsulatus membrane fragments. FEBS Lett 271:123-7.

» PMID: 2171997 Open Access

Zannoni D, Moore AL (1990) FEBS Lett

Abstract: The dependence of the respiratory rate on the redox poise of the quinone pool was investigated in wild type and mutant membranes of Rhodobacter capsulatus. A linear relationship has been found between these two parameters only when succinate was oxidized by the bc1 complex. Conversely, a marked nonlinear relationship was observed between the Q-pool reduction level and the respiratory rate when O2 uptake occurred via the alternative oxidase. In addition, it was found that this latter pathway was not engaged until Q-pool reduction level reached approximately 25%. These results are discussed within the framework of a homogeneous pool regulating both photosynthetic and respiratory fluxes.

Bioblast editor: Plangger M


Regulation: Q-junction effect 

MitoFit 2021 CoQ 

Cited by

  • Komlodi et al (2021) Simultaneous measurement of respiration and redox state of the Coenzyme Q pool in mitochondrial preparations. Bioenerg Commun 2021.3 doi:10.26124/bec:2021-0003