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Unformatted text preview: Step 3 : Fructose 6-phosphate is phosphorylated by the enzyme phosphofructokinase to form fructose 1,6-bisphosphate. This step adds even more energy to the molecule at the expense of one ATP. www.thinkwell.com email@example.com Copyright 2000, Thinkwell Corp., All Rights Reserved. 031600bio091 Step 4 : Fructose 1,6-bisphosphate is split into two molecules, dihydroxyacetone phosphate and glyceraldehyde phosphate. Step 5 : Dihydroxyacetone phosphate is converted into glyceraldehyde 3-phosphate. This reaction runs in both directions, but because the glyceraldehyde 3-phosphate is converted further in glycolysis, the equilibrium favors the formation of glyceraldehyde 3-phosphate. Glyceraldehyde 3-phosphate goes on to the next phase of glycolysis, the energy payoff phase....
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