(S)-Malate + NAD+ <=> Oxaloacetate + NADH + H+ EC Number: 1.1.1.37 Mitochondrial malate dehydrogenase catalyzes the reversible reaction of malate and NAD+ to form oxaloacetate and NADH + H+ (Luo et al. 2006). This reaction is highly endergonic but is pulled in the direction annotated here when the TCA cycle is operating. Unpublished crystallographic data indicate that the protein is a dimer (PDB 3E04). Pubmed16740313 Reactome Database ID Release 4370979 Reactome, http://www.reactome.org ReactomeREACT_2172