What is the primary role of pyruvate kinase in glycolysis? It transfers a phosphate group to ADP, forming ATP It cleaves fructose-1,6-bisphosphate into two three-carbon molecules It generates NADH by oxidizing NAD+ It phosphorylates glucose to glucose-6-phosphate
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Step 1: Pyruvate kinase is an enzyme that catalyzes the transfer of a phosphate group from phosphoenolpyruvate (PEP) to ADP, forming ATP and pyruvate. Show more…
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Glycolysis. In the third step of glycolysis, the enzyme phosphofructokinase transfers a phosphate group from ATP to fructose-6-phosphate to generate fructose-1,6-bisphosphate. In contrast, in step 10, the enzyme pyruvate kinase transfers a phosphate group from phosphoenolpyruvate to ADP to generate ATP. Using what you know about the standard free energy change associated with phosphate bonds, (briefly) explain why we observe this difference.
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