Question
Is it the pro- $R$ or pro-S hydrogen that is removed in step 5 of glycolysis, the isomerization of dihydroxyacetone phosphate to glyceraldehyde 3-phosphate? You might want to review Section $5-11$ on prochirality.
Step 1
In glycolysis, dihydroxyacetone phosphate (DHAP) is isomerized to glyceraldehyde 3-phosphate (G3P) by the enzyme triose phosphate isomerase. Show more…
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One step in glycolysis, the pathway that converts glucose to pyruvate (Section $28-2$ ), 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 $17-5$ ).
One step in glycolysis, the pathway that converts glucose to pyruvate (Section 27.2 ), involves an enzymecatalyzed conversion of dihydroxyacetone phosphate to D-glyceraldehyde-3-phosphate. Show that this transformation can be regarded as two enzyme-catalyzed keto-enol tautomerizations (Section 16.5).
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