Pyruvate Dehydrogenase E1-alpha subunit (PDHA1) is one of multiple enzymes in a mitochondrial complex, called the Pyruvate Dehydrogenase (PDH) complex, involved in the transition between glycolysis and the tricarboxylic acid (TCA) cycle during cellular respiration. The PDHA1 enzyme catalyzes the reaction that produces acetyl-CoA and CO2 from pyruvate (1). PDHA1 also regulates the PDH complex through reversible phosphorylation.
