FIG. 5.
Three possible reactions for the direct formation of G-1-P: A, reduction of d-GAP; B, reduction of DHAP; C, phosphorylation of glycerol (G-1-P forming). Enzyme 1, glycerol kinase (G-3-P forming); enzyme 2, G-3-P dehydrogenase; enzyme 3, triose phosphate isomerase; enzyme 4, G-1-P dehydrogenase. Reaction 5, ether lipid synthesis. FDP, fructose diphosphate.