ubiquinol-8 + pyruvate => ubiquinone-8 + (R)-lactate
ubiquinol-8 + pyruvate => ubiquinone-8 + (r)-lactate
ubiquinol-8 + pyruvate => ubiquinone-8 + (R)-lactate
ubiquinol-8 + pyruvate => ubiquinone-8 + (r)-lactate