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Actually, three are the enzymes that intervene during glycogen breakdown (glycogenolysis).
- First, Glycogen phosphorylase (or simply phosphorylase) that catalyzes glycogen phosphorolysis (bond cleavage by the substitution of a phosphate group) to yield glucose-1-phosphate (G1P) releasing only one glucose residue that is at least five residues from a ramification point.
- The second enzyme is the Glycogen debranching enzymethat removes glycogen's branches, thereby permiting the glycogen phosphorylase reaction (see above) to go to completion. This enzymes also hydrolyzes alpha(1-6)-linked glucosyl units to yield glucose.
- Finally, Phosphoglucomutase that converts G1P to G6P which is also formed in the first step of glycolysis through the action of either hexokinase or glucokinase.
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Which enzyme regulates the reaction represented by the word equation?
ATPase
Does glycogenolysis occur in the cytosol of the cell?
Yes
What is Introduction to Glycogen Metabolism?
glycogen metabolism is the terminology used for both glycogen synthesis and glycogen degradation ,glycogenesis and glycogenolysis .both of these pathways are exactly opposite to each other because both of these pathways involve different enzymes glycogenesis is carried out by enzymes HEXOKINASE,PHOSPHOGLUCOMUTASE,UDP-GLUCOSE-PYROPHOSPHORYLASE,and GLYCOGEN SYNTHASE. glycogenolysis is carried out by enzymes GLYCOGEN PHOSPHORYLASE,PHOSPHOGLUCOMUTASE,and debranching enzyme (GLUCAN TRANSFERASE).
what is glycogenolysis and what does it have to do with?
Glycogenolysis is the term for when the body breaks down glycogen to produce glucose. It is regulated based on the body's blood sugar levels. It also is connected to the flight-or-fight response, as the release of epinephrine stimulates it.
What are the precursors of glycogenolysis?
Alpha cells in the pancreas detect low blood sugar and secrete glucagon. Glucagon travels to the liver to stimulate breakdown of glycogen reserves (glycogenolysis) and stimulate gluconeogenesis (production of new glucose).
What are some characteristics of glycogen phosphorylase?
I, II, and III I. It is the rate-limiting enzyme of glycogenolysis II. It breaks alpha 1,4 glycosidic bonds III. It is activated by epinephrine
Which enzyme regulates the reaction represented by the word equation?
ATPase
What type of proteins regulates nearly all chemical reactions in cells?
enzyme
What type of protein regulates nearly all chemical reaction in a cell?
An enzyme is a protein that speeds up the rate of chemical reactions.
What type of protein regulates nearly all chemical reactions in the cell?
That protein would be an enzyme.
What promotes glycogenolysis?
Glucagon
When glycogenolysis will occur?
At the fasting time
The process of glycogenolysis is an example of?
Phosphorolysis
Where does glycogenolysis occur?
It occurs in the liver.
What is Glycogenolisis?
http://en.wikipedia.org/wiki/Glycogenolysis
Which of the following is an example of a catabolic reaction?
Glycogenolysis
Does glycogenolysis occur in the cytosol of the cell?
Yes
