Pyruvate carboxylase

From Bioblast
Jump to: navigation, search
Bioblasts - Richard Altmann and MiPArt by Odra Noel
MitoPedia     Terms and abbreviations     Preprints and history     MiP and biochemistry     Concepts and methods     MitoPedia: SUIT     MitoPedia: O2k


Pyruvate carboxylase


Pyruvate carboxylase synthesizes oxaloacetate from pyruvate and CO2 as an anaplerotic reaction in the mitochondrial matrix of the liver and kidney of higher animals, representing an alternative to the malic enzyme pathway to oxaloacetate or the phosphoenolpyruvate carboxykinase reaction (compare glyoxylate cycle in plants and microorganisms). Carboxylation of pyruvate to oxaloacetate requires Mg-ATP. Acetyl CoA is a strong positive modulator. PC can form pyruvate from oxaloacetate to remove an excess of oxaloacetate which inhibits succinate dehydrogenase.

Abbreviation: PC

Reference: Lehninger 1970 Worth Publishers, Gnaiger 2020 BEC MitoPathways

MitoPedia topics: Enzyme