part of part of has part has part starts with ends with has primary output has primary input pyruvate acetyl-CoA(4-) dihydrolipoyl dehydrogenase (NADH) activity pyruvate dehydrogenase (acetyl-transferring) activity dihydrolipoyllysine-residue acetyltransferase activity acetyl-CoA biosynthetic process pyruvate decarboxylation to acetyl-CoA pyruvate metabolic process biosynthetic process aerobic respiration