the regulation of glycolysis (1)
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Last updated 5:05 PM on 3/13/25
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12 Terms
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Enzyme regulation
The process by which enzymes are activated or deactivated through various mechanisms.
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Allosteric inhibition
A change in enzyme shape due to the binding of a compound, which reduces enzyme activity.
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Hexokinase
An enzyme that catalyzes the conversion of glucose to glucose-6-phosphate (G6P) in glycolysis.
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Glucokinase
A hepatic isozyme of hexokinase that has a low glucose affinity and operates when glucose concentrations are high.
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Rate limiting step
The slowest step in a series of reactions that determines the overall rate of the process.
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Phosphofructokinase 1 (PFK-1)
The main regulatory enzyme in glycolysis that converts fructose-6-phosphate (F6P) to fructose-1,6-bisphosphate.
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Citrate
A metabolic intermediate that inhibits PFK-1 activity, signaling sufficient energy resources.
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Fructose-2,6 bisphosphate
An allosteric activator of PFK-1 that increases glycolysis rate, produced by PFK-2.
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Glycogenesis
The process of converting glucose into glycogen for storage.
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Pyruvate kinase
An enzyme that catalyzes the final step of glycolysis, converting phosphoenolpyruvate to pyruvate.
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AMP
A nucleotide that activates PFK-1, promoting glycolysis when energy levels are low.
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Covalent modifications
Changes to enzymes through the addition or removal of chemical groups, affecting their activity.
Note 
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