518 ATP NAD+-dependent enzyme glycerol dehydrogenase GDH DhaD Dihydroxyacetone, DHA NADH DHA Dihydroxyacetone phosphate, DHAP ATP- dependent dihydroxyacetone kinase DhaK DHAP (Glycolysis) 2,3 Phosphoenolpyruvate 1,3 NAD/NADH2 1,3