propanoate + pyruvate => (2R,3S)-2,3-dimethylmalate
propanoate + pyruvate => (2r,3s)-2,3-dimethylmalate
propanoate + pyruvate => (2R,3S)-2,3-dimethylmalate
propanoate + pyruvate => (2r,3s)-2,3-dimethylmalate