Measurement of the redox state of the ubiquinone pool in plant mitochondria

FEBS Letters

Wiskich, Joseph T.¹  Moore, Anthony L.²  Dry, Ian B.¹ 

[1] Department of Botany, University of Adelaide, Adelaide, SA 5001, Australia;Department of Biochemistry, University of Sussex, Falmer Brighton BN1 9QG, England

关键词: Quinone pool;    Force-flow relationship;    Mitochondria;    Alternative oxidase;    Q;    ubiquinone;    Q-1;    ubiquinone-1;    Qt;    fully reduced ubiquinone;    Qr;    ubiquinone reduced under steady-state conditions;   

DOI  :  10.1016/0014-5793(88)81237-7

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

We have investigated the dependence of the respiratory rate on the redox poise of the quinone pool in isolated turnip and pea leaf mitochondria. A linear relationship has been found between these two parameters during succinate oxidation under both state 3 and 4 conditions. When succinate is oxidised by the alternative oxidase the dependence of oxygen uptake on the steady-state reduction level of quinone is markedly non-linear. These results are discussed within the frame-work of a homogeneous quinone pool.

【 授权许可】

Unknown