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Below is a curve for the enzyme glycogen phosphorylase without any allosteric effectors present showing velocity as a function of the substrate, orthophosphate (Pi). Draw and label a curve that shows the result of addition of the allosteric activator, AMP. Draw and label a curve that shows the result of addition of the allosteric inhibitor, ATP. Glycogen phosphorylase is activated by phosphorylation. Which of these three curves most resembles what happens when glycogen phosphorylase is phosphorylated?
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