||Native Bovine PDHBwas expessed in bovine heart.
||PDHB, also known aspyruvate dehydrogenase E1 component subunit beta, mitochondrial or PDHE1-B isan enzyme that in humans is encoded by the PDHB gene. The PDHB is anuclear-encoded mitochondrial multienzyme complex that catalyzes the overallconversion of pyruvate to acetyl-CoA and CO2, and provides the primary linkbetween glycolysis and the tricarboxylic acid (TCA) cycle. The PDH complex iscomposed of multiple copies of three enzymatic components: pyruvatedehydrogenase (E1), dihydrolipoamide acetyltransferase (E2) and lipoamidedehydrogenase (E3). The E1 enzyme is a heterotetramer of two alpha and twobeta subunits. This gene encodes the E1 beta subunit.
||Liquid in 50 mMTris-HCl, pH 7.0 + 14 mM β-mercaptoethanol + 1 mM benzamidine +0.1 mM phenylmethanesulfonyl fluoride + 1 mM EDTA + 10% glycerol
||> 90% asdetermined by SDS-PAGE analysis, subunit apparent Mr"s ~ 74,000 (E2), 53,000(E3), 41,000 (E1a), 48,000 (E3-BP) and 36,000 (E1b). Apparent Mr ~ 8,500,000by sedimentation equilibrium centrifugation.
||12-18 µmol of NADHformed per minute per mg of protein with pyruvate as substrate.
||Store in workingaliquots at -80°C. Avoid repeated freeze-thaw cycles.