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Flashcards in Glycolysis Deck (70)
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61

from the a(1,4) terminal chains of glycogen

brnaching enzyme removes a 7 residue grafment from chaisn of at least ___ residues

11 (needs 4 left over)

62

branching enzymes converts from the a(1,4) terminal chains of glycogen to a ___ chain of glycogen

a(1-6) glycogen chain

 

this introduces a branch, so now have 3 branches instead of 2

63

Glycogen polymers may contain up to___ Glu units each 

 120,000

64

Glycogen polymers contribute up to ___ of the rotal mass of 10% of th eottal mass of the liver

10 percent

65

When Glu is needed, Phosphorylase breaks the glycosidic bond at the end of a Glycogen chain by addition of 

a phosphate to give G1P

66

how long can glucose be removed from glycogen?

 

until terminal glucose on the chain is within 4 residues of a branch point where steric hinderance prevents further digestion by Phosphorylase

67

• Debranching enzyme transfers a ____ from the stub to the C4 hydroxyl at the end of another branch

trisaccharide

68

two functions of debranching enzyme?

1. transfers a trisaccharide froms tub  of c4 gtdroxyl at the end of another branch

2. also cleaves the reamin a,16 glu by hydrolysis

69

difference betw Phsophoglucomutase  in conversion of G1P to G6P and  Phosphoglycerate Mutase in conversion of 3PG to 2PG?

Ser-P intermediate instead of His-P in Phsophylycomutase

70

cost of temproailry storing glu in glycogen in muscle/liver

from g6p -> glycogen -> g6p