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17 Cards in this Set
- Front
- Back
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What is a kinase?
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Uses ATP to add high-energy phosphate groups onto substrate
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What is a phosphorylase?
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Adds inorganic phosphate onto substrate without using ATP
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What is a phosphatase?
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Removes phosphate group from substrate
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What is dehydrogenase?
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Catalyzes oxidation-reduction reactions
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What is carboxylase?
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Transfers CO2 groups with the help of biotin
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What is the Rate-limiting-enzyme (RLE) for glycolysis?
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PFK-1
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What is the RLE for Gluconeogenesis?
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Fructose 1,6-bisphosphatase
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What is the RLE for the TCA cycle?
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Isocitrate dehydrogenase
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What is the RLE for Glycogen synthesis?
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Glycogen synthase
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What is the RLE for Glycogenolysis?
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Glycogen phosphorylase
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What is the RLE for HMP shunt?
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G6PD
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What reaction is NAD+ used in?
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Catabolic processes, to carry reducing equivalents away as NADH
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What reaction is NADH used in?
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Anabolic processes as a supply of reducing equivalents
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What are hexokinase and glucokinase used for?
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Phosphorylation of glucose to yield G6P, serves as first step of glycolysis, reaction catalyzed by either hexokinase or glucokinase
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What are the characteristics of Hexokinase?
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High affinity, low capacity, uninduced by insulin
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What are the characteristics of Glucokinase?
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High capacity, low affinity, induced by insulin
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Where is glucokinase found?
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Liver and B-cells of pancreas
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