Anaplerotic reaction
Reaction that replenishes or restores a substrate, e.g., conversion of pyruvate to oxaloacetate.
A reaction that refills depleted intermediates of the tricarboxylic acid cycle. The canonical example is pyruvate carboxylase converting pyruvate to oxaloacetate, sustaining TCA cycle flux when intermediates are siphoned off for biosynthesis.
How one textbook covers it
Advanced Nutrition and Human Metabolism, 8th ed. (Gropper) — Glossary
A reaction that refills depleted intermediates of the tricarboxylic acid cycle. The canonical example is pyruvate carboxylase converting pyruvate to oxaloacetate, sustaining TCA cycle flux when intermediates are siphoned off for biosynthesis.
Related terms
Gluconeogenesis, Tricarboxylic acid cycle