Glycogenolysis

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4 Terms

1
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what is the first step of glycogenolysis

the existing glycogen chain is phosphorylated by glycogen phosphorylase. It lyses a glycogen molecule and the phosphate group gets transferred to the carbon 1 of glucose G1P

2
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what is the second step of glycogenolysis

G1P is converted to G6P by phosphoglucomutase and the phosphate moves from carbon 1 to carbon 6

3
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what is the third step of glycogenolysis

it can be broken up into 2 steps depending on concentration and location of the molecule,

G6P can enter step 2 of glycolysis and make pyruvate or G6P can shed the phosphate and make glucose (via water and G6P) - only in liver

4
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what is the 4th step of glycogenolysis

the glucose can be used anywhere in the body via transport outside the cell