glycogenolyse Flashcards

1
Q

glycogenolyse est une voie

A

de catabolisme , de degradation de glycogene

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2
Q

ou se déroule

A

dans le cytoplasme des c hepatiques et musculaires

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3
Q

pk faire

A

en absence de glucose , la neoglyvogenese est souvent lente pour repondre a une demande immediate

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4
Q

dans le foie

A

a distante d un repas

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5
Q

dans le muscle

A

en activite

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6
Q

reaction 1

A

phosphrolyse les liasons alpha (1➔4)

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7
Q

enzyme de 1

A

glycogene phosphorylase

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8
Q

reaction 1 est une etape

A

limitante : site de regulation

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9
Q

reaction 2

A

transfert du glycose

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10
Q

enzyme 2

A

transferase
(il transfer 3 glucose de chaines des branchement vers la chaine liniare )

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11
Q

reaction 3 a comme enzyme

A

alpha(1➔6) glycosidase

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12
Q

enzyme de 3

A

cette enzyme hydrolise par h2o la liason pour libere le glucose

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13
Q

reaction 4

A

phosphorolyse des liasion alpha (1➔4)

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14
Q

enzyme 4

A

GLYCOGENE PHOSPHOLYRASE

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15
Q

reaction 5 reversible

A

glucose 1p ➔glucose 6P

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16
Q

enzyme 5

A

phosphoglucomutase

17
Q

reaction 6

A

glucose 6P ➔glucose

18
Q

enzyme de 6

A

GLUCOSE 6PHOSPHATASE

19
Q

BILAN

A

ne consome pas d energie