Glycogen Flashcards
What is glycogen?
A polysaccharide
Storage of glucose
Can fat be metabolised into glucose?
No
When do muscles change glycogen into glucose?
When they need ATP to fuel the muscles
What organ stores most glycogen?
Muscle
Is glycogen linear or branched?
Branched
How are glycogen stored?
As granules
What forms the surface of the glycogen granule?
The non-reducing end
Why are glycogen granules stored as granules with the nonreducing end sticking out?
Because that’s where degradation takes place, makes the metabolism faster
What does the glycogenin dimer serve as?
A primer for glycogen synthesis
What is glycogenlysis?
The breakdown of cellular glycogen to glucose 1-phosphate
What is glycogenesis?
Synthesis of glycogen
3 things that can happen to glucose 6-phosphate
Processing by the glycolytic pathway
Conversion into free glucose for release into the blood
Processing by the pentose phosphate pathway
Where is the glucose 6-phosphatase present?
Liver (and kidneys)
How are glycogen degradation and synthesis regulated in relations to eachother?
Reciprocally
Which end of the glycogen does the degradation start?
The nonreducing ends
