
Fig. 11. Proposed pathways for the production of glycerol in smelt. FBP, fructose-
1,6-bisphosphate; GAP, glyceraldehyde-3-phosphate; DHAP, dihydroxyacetone
phosphate; G3P, glycerol-3-phosphate; PEP, phosphoenolpyruvate; OAA,
oxaloacetate;
KG, alpha-ketoglutarate. Enzymes are (1) aspartate
aminotransferase; (2) alanine aminotransferase; (3) glutamate dehydrogenase;
(4) pyruvate carboxylase; (5) phophoenolpyruvate carboxykinase; (6) aldolase;
(7) triose isomerase; (8) glycerol-3-phosphate dehydrogenase; (9)
glycerol-3-phosphatase. Dotted arrows indicate multiple conversion steps.