Anti-phospho-Pyruvate Dehydrogenase E1-alpha Subunit, (Ser293) (Pyruvate Dehydrogenase E1 alpha, Pyr

The pyruvate dehydrogenase complex (PDC) is a nuclear-encoded mitochondrial matrix multienzyme complex that provides the primary link between glycolysis and the tricarboxylic acid (TCA) cycle by catalyzing the irreversible conversion of pyruvate into acetyl-CoA. The PDH complex is composed of multiple copies of 3 enzymes: E1 (PDHA1 or PDHE1), dihydrolipoyl transacetylase (DLAT), and dihydrolipoyl dehydrogenase (DLD). The E1 enzyme is a heterotetramer of 2 alpha and 2 beta subunits. The E1-alpha subunit contains the E1 active site and plays a key role in the function of the PDH complex. Enhanced expression of pyruvate dehydrogenase kinase-1 (PDK-1) results in phosphorylation of PDHE1 alpha at Serine 293 which in turn produces nearly complete inhibition of the pyruvate dehydrogenase complex (PDC). A recent study shows that inhibition of PDC activity in cancer cells restores normoxic stablization of HIF-1 alpha by glycolytic metabolites., , Applications: , Suitable for use in Immunofluorescence/Immunocytochemistry and Western Blot. Other applications not tested. Recommended Dilutions: Western Blot: 1:1000-1:5000 detects a band at ~43kD., Immunofluorescence (IC): 1:50-1:250, Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.