Glycolysis

Glucose is converted to glucose 6-phosphate by hexokinase or glucokinase and ATP is required. Glucose 6-phosphate is converted to fructose 6-phosphate by phosphoglucoisomerase. Fructose 6-phosphate is converted to fructose 1,6-bisphosphate by phosphofructokinase and ATP is required. Fructose 1,6-bisphosphate is converted to two Triose, glyceraldehyde 3-phosphate and dihydroxyacetone phosphate by aldolase. Only glyceraldehyde 3-phosphate proceeds to the next step. Glyceraldehyde 3-phosphate is converted to 1,3-bisphosphoglycerate by glyceraldehyde 3-phosphate dehydrogenase and NADH is generated. 1,3-bisphosphoglycerate is converted to 3-phosphoglycerate by phosphoglycerate kinase and ATP is generated. 3-phosphoglycerate is converted to 2-phosphoglycerate by enolase. 2-phosphoglycerate is converted to phosphenolpyruvate by pyruvate kinase and forms pyruvate.

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