Glycerol metabolic pathways in D. melanogaster. Hex, hexokinase; Pgi, phosphoglucose isomerase; Pfk, phosphofructokinase; Ald, aldolase; Tpi, triosephosphate isomerase; Gpdh, NAD+ glycerol 3-phosphate dehydrogenase; Gpo, glycerophosphate oxidase/FAD glycerol 3-phosphate dehydrogenase; aay, astray; Gapdh, glyceraldehydes 3-phosphate dehydrogenase; Pgk, phosphoglycerate kinase; Pglym, phosphoglyceromutase; Eno, enolase; Pyk, pyruvate kinase; Gpt, Glutamate pyruvate transaminase; rdgB, retinal degeneration B; Dhapat, dihydroxyacetone phosphate acyltransferase; CdsA, CDP diglyceride synthetase; eas, easily shocked/ethanolamine kinase; mdy, midway/diacylglycerol O-acyltransferase; wun, wunen/phosphatidate phosphatase. Loci responsible for these activities in Drosophila are shown above and/or below the arrows denoting the reactions.