Glycolysi1 - Glycolysis Step 6: Phosphoglycerate Kinase In...

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Glycolysis Step 6: Phosphoglycerate Kinase In this step, 1,3 bisphoglycerate is converted to 3-phosphoglycerate by the enzyme phosphoglycerate kinase (PGK). This reaction involves the loss of a phosphate group from the starting material. The phosphate is transferred to a molecule of ADP that yields our first molecule of ATP. Since we actually have two molecules of 1,3 bisphoglycerate (because there were two 3- carbon products from stage 1 of glycolysis), we actually synthesize two molecules of ATP at this step. With this synthesis of ATP, we have cancelled the first two molecules of ATP that we used, leaving us with a net of 0 ATP molecules up to this stage of glycolysis. Figure %: Step 6. Again, we see that an atom of magnesium is involved to shield the negative charges on the phosphate groups of the ATP molecule. Step 7: Phosphoglycerate Mutase This step involves a simple rearrangement of the position of the phosphate group on the 3 phosphoglycerate molecule, making it 2 phosphoglycerate. The molecule responsible for
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Glycolysi1 - Glycolysis Step 6: Phosphoglycerate Kinase In...

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