CST, 31866S, Phospho-Pyruvate Dehydrogenase alpha1 (Ser293) Antibody

Polyclonal Antibody for studying PDHA1 (Ser293) phosphate/PDHA2 (Ser291) phosphate. Validated for Western Blotting. Highly specific and rigorously validated in-house, Phospho-Pyruvate Dehydrogenase alpha1 (Ser293) Antibody (CST #31866) is ready to ship. Product Usage Information Western Blotting: 1:1000 Storage Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at -20°C. Do not aliquot the antibody. Protocol Available protocols: Western Blotting Specificity / Sensitivity Phospho-Pyruvate Dehydrogenase alpha1 (Ser293) Antibody recognizes endogenous levels of pyruvate dehydrogenase α1 protein only when phosphorylated at Ser293 residue. Based on amino acid sequence comparisons, this antibody is predicted to detect endogenous levels of pyruvate dehydrogenase α2 protein only when phosphorylated at Ser291 residue. Species Reactivity: Human, Mouse, Rat, Monkey Source / Purification Polyclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser293 of human pyruvate dehydrogenase α1 protein. Background The pyruvate dehydrogenase complex catalyzes the conversion of pyruvate and CoA into acetyl-CoA and CO in the presence of NAD . Acetyl-CoA then goes into the citric acid cycle where it reacts with oxaloacetate to form citrate. The reaction of oxidative decarboxylation of pyruvate serves as a critical link between glycolysis and the citric acid cycle. In mammalian cells, the pyruvate dehydrogenase complex is located in the mitochondrial matrix (1). This complex is composed of three enzymes: pyruvate dehydrogenase (E1), dihydrolipoamide acetyltransferase (E2), and dihydrolipoamide dehydrogenase (E3). Pyruvate dehydrogenase (E1) consists of two subunits: α and β. This enzyme catalyzes the removal of CO from pyruvate. Mutations in the α subunits of pyruvate dehydrogenase (E1) lead to congenital defects that are usually associated with lactic acidosis, neurodegeneration, and early death (2). Pyruvate dehydrogenase kinase 1 phosphorylates pyruvate dehydrogenase (E1) α1 subunit at Ser293 to inactivate its activity (3, 4). This phosphorylation contributes to the tumor metabolic reprogramming toward glycolysis in hypoxia by inhibiting the citric acid cycle (4). Alternate Names MGC149517; MGC149518; ODPA; ODPAT; PDHA; PDHA1; PDHA2; PDHAD; PDHAL; PDHCE1A; PDHE1-A type I; PDHE1-A type II; PHE1A; pyruvate dehydrogenase (lipoamide) alpha 1; pyruvate dehydrogenase (lipoamide) alpha 2; pyruvate dehydrogenase alpha 1; pyruvate dehydrogenase alpha 2; pyruvate dehydrogenase complex, E1-alpha polypeptide 1; pyruvate dehydrogenase E1 alpha 1; pyruvate dehydrogenase E1 alpha 1 subunit; pyruvate dehydrogenase E1 alpha 2; pyruvate dehydrogenase E1 alpha 2 subunit; Pyruvate dehydrogenase E1 component subunit alpha, somatic form, mitochondrial; Pyruvate dehydrogenase E1 component subunit alpha, testis-specific form, mitochondrial; pyruvate dehydrogenase E1 subunit alpha 1; pyruvate dehydrogenase E1 subunit alpha 2; pyruvate dehydrogenase, E1-alpha polypeptide, testis specific Specification REACTIVITY: H M R Mk SENSITIVITY: Endogenous MW (kDa): 43 SOURCE: Rabbit