Flashcards in Rate-determining enzymes of metabolic processes Deck (13)
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1
Glycolysis?
Phosphofructokinase 1
(+) AMP, Fructose 2,6 bisphosphate
(-) ATP, Citrate
2
Guconeogenesis
Fructose 1,6 bisphosphatase
(+) ATP, acetyl-coA
(-) AMP, fructose 2,6 bisphosphate
3
TCA cycle
Isocitrate dehydrogenase
(+) ADP
(-) ATP, NADH
4
Glycogenesis
Glycogen synthase
(+) Glucose 6 phosphate, insulin, cortisol
(-) epinephrine, glucagon
5
Glycogenolysis
Glycogen phosphorylase
(+) Epinephrin, Glucagon, AMP
(-) Glucose 6 phosphate, insulin, ATP
6
HMP shunt
Glucose-6-phosphate dehydrogenase (G6PD)
(+) NADP+
(-) NADPH
7
De novo pyrimidine synthesis
Carbamoyl phosphate synthetase II (cytoplasm)
(+) ATP
(-) UTP
8
De novo purine synthesis
Glutamine-phosphoribosylpyrophosphate (PRPP) amidotransferase
(-) AMP, inosine monophosphate, GMP
9
Urea Cycle
Carbamoyl phosphate synthetase I (mitochondria)
(+) N-acetylglutamate
10
Fatty acid synthesis
Acetyl CoA carboxylase (ACC)
(+) insulin, citrate
(-) glucagon, palmitoyl-coA
11
Ketogenesis
HMG-coA synthase
12
Cholesterol synthesis
HMG-coA reductase
(+) insulin, thyroxine
(-) Glucagon, cholesterol
13