One step in glycolysis, the pathway that converts glucose to pyruvate (Section 20.2), in...

One step in glycolysis, the pathway that converts glucose to pyruvate (Section 20.2), involves an enzyme-catalyzed conversion of dihydroxyacetone phosphate to D-glyceraldehyde 3-phosphate. Show that this transformation can be regarded as two enzyme-catalyzed keto-enol tautomerizations (Section 9.5).