Energy metabolism enzymes and pyruvate metabolism

Energy metabolism enzymes and pyruvate metabolism refers to the collective group of proteins and biochemical reactions involved in the conversion of carbon sources into cellular energy and biosynthetic intermediates. Pyruvate serves as a central node in this network, linking glycolysis in the cytosol to the tricarboxylic acid (TCA) cycle in the mitochondria (KEGG: map00620). Dysregulation of these enzymes is a hallmark of many diseases; for instance, cancer cells often exhibit the Warburg effect, where they prioritize aerobic glycolysis over oxidative phosphorylation to support rapid growth (Vander Heiden et al., Science 2009). Therapeutic interventions targeting this system include inhibitors of pyruvate dehydrogenase kinase (PDK) like dichloroacetate or activators of pyruvate kinase like mitapivat (PubMed: 30033355). Additionally, drugs like metformin indirectly influence this pathway by inhibiting mitochondrial complex I, thereby altering the AMP/ATP ratio and downstream metabolic flux (PubChem). Because this term describes a broad metabolic pathway rather than a single protein or receptor, it is considered a functional category rather than a specific therapeutic target. Monitoring metabolites such as lactate and pyruvate is often used to assess the efficacy or safety of drugs targeting these pathways (StatPearls).

Other names

Pyruvate metabolismCentral carbon metabolismGlycolytic and TCA cycle enzymes

Modulation of metabolic flux through the inhibition or activation of specific enzymes involved in glucose oxidation, the TCA cycle, or related biosynthetic pathways.