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  4. Which of the following conversions in glycolysis is an example of substrate level phosphorylation?

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Q. Which of the following conversions in glycolysis is an example of substrate level phosphorylation?

KVPYKVPY 2019

Solution:

The conversion of $1 , 3$ -bisphosphoglycerate to $3 $ -phosphoglycerate is an example of substrate level phosphorylation. ATP is produced in this reaction.
$1, 3$ -bisphosphoglycerate $+$ ADP
$\ce{<=>[{\text{Phosphoglycerate}}][{\text{Kinase}}]} 3$-phosphoglycerate $+$ ATP
In this process, high energy phosphate group is transferred from $1 , 3$
bisphosphoglycerate which results in the formation of ATP.
This ATP formation is referred as substrate level phosphorylation because the phosphate donor $1,3$
bisphosphoglycerate is a substrate.