Abstract
A new method permitting the simultaneous evaluation of the redox states of α-lipoamide dehydrogenase and electron-transfer flavoprotein in intact rat liver mitochondria by two-channel fluorimetry is described. It is shown that correction for the partial overlap of emission spectra can readily be introduced after a calibration procedure is performed. This method was applied to the investigation into regulation of palmitoylcarnitine oxidation. It was found that in the presence of rotenone, malonate and a redox buffer for the mitochondrial NAD-system, the β-oxidation flux was sensitive to variations in redox state of respiratory chain electron carriers at low states of NAD reduction. Therefore, the concept of β-oxidation control caused solely by the NAD redox state can no longer be sustained.
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Schedule a callMore From: Biochimica et Biophysica Acta (BBA) - Bioenergetics
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