The Action of 2,4-Dinitrophenol on Corn Root Mitochondria
Open Access
- 1 January 1969
- journal article
- Published by CSIRO Publishing in Australian Journal of Biological Sciences
- Vol. 22 (4) , 847
- https://doi.org/10.1071/bi9690847
Abstract
A study has been made of the action of a wide range of concentrations of 2,4-dinitrophenol (DNP) on the partial reactions of oxidative phosphorylation. DNP at a concentration of 1 X 10-4M caused classic uncoupling of oxidative phos-phorylation. Higher concentrations inhibited ,phosphorylation and oxidation. The inhibition of oxidation was due to an inhibition of malate dehydrogenase. The P : � ratio was reduced by uncoupling and inhibition of the enzymes involved in ATP formation.Keywords
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