Pyruvate dehydrogenase E1 component subunit alpha, somatic form, mitochondrial (PDHA1)

Pyruvate dehydrogenase E1 component subunit alpha, somatic form, mitochondrial (PDHA1), is an essential mitochondrial enzyme subunit responsible for catalyzing the oxidative decarboxylation of pyruvate to acetyl-CoA, the crucial step linking glycolysis to the TCA cycle and cellular energy production. The enzyme is a heterotetramer consisting of two alpha and two beta subunits. PDHA1 mutations cause pyruvate dehydrogenase complex deficiency, leading to metabolic and neurological disorders due to impaired ATP generation. The activity of the PDH complex is regulated by phosphorylation, cofactors (notably thiamine pyrophosphate), and pharmacological modifiers. It is a well-studied target for the treatment of inherited and acquired metabolic diseases.

Other names

PDHA1PDHAPDHCE1APHE1APDHE1-A type Ipyruvate dehydrogenase (lipoamide) alpha 1pyruvate dehydrogenase alpha 1pyruvate dehydrogenase E1 alpha 1 subunitpyruvate dehydrogenase complex, E1-alpha polypeptide 1pyruvate dehydrogenase E1 component subunit alpha, somatic form, mitochondrial

Allosteric activation or stabilization of the enzyme complex; Cofactor supplementation (thiamine to enhance enzyme activity); Pharmacological activation (dichloroacetate inhibits pyruvate dehydrogenase kinase, activating the complex)