23 下列那一個糖解酵素會受到升糖素(glucagon)的影響?
(A)己糖激酶(Hexokinase)
(B)乳酸脫氫酶(Lactate dehydrogenase)
(C)三碳糖磷酸異構酶(Triose phosphate isomerase)
(D)丙酮酸激酶(Pyruvate kinase)

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統計: A(3), B(0), C(0), D(0), E(0) #1045702

詳解 (共 1 筆)

#3263920

glucagon會活化肝臟的GPCR傳訊→Gs→adenylyl cyclase→cAMP↑→PKA

磷酸化

(1)Pyruvate kinase:抑制Pyruvate kinase-不走glycolysis

(2)PFK2/FBPase-2:抑制PFK2,活化FBPase-不走glycolysis,走gluconeogenesis

(3)glycogen phosphorylase:活化glycogen phosphorylase-肝醣分解

(4)glycogen synthase:抑制glycogen synthase-肝醣不合成

 


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