31. PDK can phosphorylate a serine residue on pyruvate dehydrogenase at three possible sites. 32. The reaction uses thiamine pyrophosphate in order to link the two pyruvate molecules. 33. The metabolic pathways : pyruvate metabolism, propanoate metabolism, and styrene degradation. 34. This enzyme participates in pyruvate metabolism and c5-branched dibasic acid metabolism. 35. This enzyme participates in pyruvate metabolism and propanoate metabolism. 36. The metabolic pathways : pyruvate metabolism, propanoate metabolism, and butanoate metabolism. 37. This enzyme participates in pyruvate metabolism and carbon fixation. 38. Lactate catalysed by lactate dehydrogenase will form pyruvate with expense of NAD +. 39. Pyruvate generated from alanine will enter glyceroneogenesis and generate glycerol 3-phosphate.40. An example of a moonlighting enzyme is pyruvate carboxylase. 