Glycogenesis Flashcards
Glycogen
It is a storage form of glucose that are linked by 1,4 linear and 1,6 branched glycosidic bonds
Non-reducing end
terminal glucose ends with free hydroxyl where additional glucose monomers are added. Extended/trimmed here.
Reducing ends
The end that nothing is added but connected to glycogenin (primer for glycogen synthesis)
Liver glycogen
Distributor that regulates blood glucose. If blood glucose, liver glycogen comes to rescue
Muscle glycogen
Provides glucose for physical exercise. Selfish.
Glycogen storage disease are ____
Autosomal recessive
Glycogen storage disorder diseases that effect breakdown
hepatomegaly because storage of glycogen
Hypoglycemia because cant maintain blood sugar
Glycogen storage disorder diseases that effect synthesis
Pts rely heavily on glucose
GSD 0
Glycogen synthase deficiency
Need to eat freq.,muscle cramps due to no glycogen
GSD1a or Von Gierke dx
Glucose-6-phosphatase deficiency
Cant release free glucose
GSD II or Pompe Disease
deficiency in Acid Maltase or acid glucosidase
Glycogen build up in lysosomes
GSD III or Cori Disease
Deficiency in 1,6 glucosidase (debranching enzyme)
Large glycogen molecules with short branches
GSD IV or Andersen Dx
deficiency in glucosyl (4:6) transferase (branching enzyme)
Cirrhosis
GS V or McArdle Disease
deficiency in muscle glycogen phosphorylase
Cant supply muscles with glucose
GSD VI or Hers Disease
deficiency in liver glycogen phorsphorylase
Hepatomegaly