TABLE 2.
Substrate-Specific Mitochondrial ROS Emission Expressed in Percent to the Rate of Oxygen Consumption
H2O2 production (% from the respiration rate) |
||
---|---|---|
Substrate | Resting respiration |
Phosphorylating respiration |
Citrate | 0.71 | 0.19 |
Glutamate | 0.33 | 0.05 |
Malate | 0.76 | 0.07 |
Malate + Glutamate | 0.79 | 0.08 |
α-Ketoglutarate | 1.07 | 0.07 |
Pyruvate | 0.89 | 0.19 |
Succinate | 3.15 | 0.04 |
Experimental conditions were as described in Figure 3. The phosphorylating respiration rates were recorded under the same conditions except that the incubation buffer was supplemented with 400 µM ADP. All substrates were added at 5 mM concentration except for the malate plus glutamate, which were added at 1 and 5 mM, respectively.