PDHA1, Polyclonal Antibody

PDHA; PDHCE1A; PHE1A

For Research Use Only. Not for use in diagnostic procedures.

Polyclonal

Rabbit

The antibody detects endogenous level of total PDHA1 protein.

Antibodies were purified by affinity purification using immunogen.

Supplied at 1.0mg/mL in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.

1.0 mg/ml (lot specific)

Store at -20 degree C

Small volumes of anti-PDHA1 antibody vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

The pyruvate dehydrogenase complex catalyzes the conversion of pyruvate and CoA into acetyl-CoA and CO2 in the presence of NAD+. Acetyl-CoA then goes into the citric acid cycle where it reacts with oxaloacetate to form citrate. Acetyl-CoA is also used for fatty acid and cholesterol biosynthesis. The reaction of oxidative decarboxylation of pyruvate therefore serves as a critical link between glycolysis and the citric acid cycle and lipid metabolism. In mammalian cells, the pyruvate dehydrogenase complex is located in the mitochondrial matrix (1). This complex is comprised of three enzymes: pyruvate dehydrogenase (E1), dihydrolipoamide acetyltransferase (E2) and dihydrolipoamide dehydrogenase (E3). Pyruvate dehydrogenase (E1) consists of two subunits: a and b. This enzyme catalyzes the removal of CO2 from pyruvate. Mutations in the a subunits of pyruvate dehydrogenase (E1) lead to congenital defects that are usually associated with lactic acidosis, neurodegeneration and early death (2).

Total protein Ab

Western Blot (WB), Immunohistochemistry (IHC), Immunofluorescence (IF)

Western blotting: 1:500 - 1:2000
Immunohistochemistry: 1:50 - 1:100
Immunofluorescence: 1:50 - 1:200

Western blot analysis of extracts of various cell lines, using PDHA1 antibody.

Immunofluorescence analysis of U2OS cell using PDHA1 antibody. Blue: DAPI for nuclear staining.

47,580 Da

pyruvate dehydrogenase (lipoamide) alpha 1

pyruvate dehydrogenase E1 component subunit alpha, somatic form, mitochondrial

Pyruvate dehydrogenase E1 component subunit alpha, somatic form, mitochondrial

PHE1A  [Similar Products]

ODPA_HUMAN

The pyruvate dehydrogenase (PDH) complex is a nuclear-encoded mitochondrial multienzyme complex that catalyzes the overall conversion of pyruvate to acetyl-CoA and CO(2), and provides the primary link between glycolysis and the tricarboxylic acid (TCA) cycle. The PDH complex is composed of multiple copies of three enzymatic components: pyruvate dehydrogenase (E1), dihydrolipoamide acetyltransferase (E2) and lipoamide dehydrogenase (E3). The E1 enzyme is a heterotetramer of two alpha and two beta subunits. This gene encodes the E1 alpha 1 subunit containing the E1 active site, and plays a key role in the function of the PDH complex. Mutations in this gene are associated with pyruvate dehydrogenase E1-alpha deficiency and X-linked Leigh syndrome. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Mar 2010]

PDHA1: a mitochondrial matrix enzyme that catalyzes the oxidative decarboxylation of pyruvate, producing acetyl-CoA and CO2. A key enzyme in controlling the balance between lipid and glucose oxidation depending on substrate availability. The pyruvate dehydrogenase (PDH) holoenzyme is a multi-enzyme complex (PDHC) that contains 20-30 copies of pyruvate decarboxylase tetramers (2 alpha:2 beta)(E1), 60 copies of dihydrolipoamide acetyltransferase (E2), six homodimers of dihydrolipoamide dehydrogenase (E3), plus E3 binding proteins. The activity of PDH is tightly regulated by phosphorylation. The phosphorylation of at least one of three specific serine residues in E1 subunit by PDHK inactivates the PDHC, while dephosphorylation by PDP restores its activity. Sites 1, 2, and 3 of PDHA1 are S293, S300, and S232, respectively. Four PDHK isoenzymes have been described, each with different site specificity: all four phosphorylate sites 1 and 2 but at different rates; for site 1 PDHK2 >PDHK4 >PDHK1 >PDHK3; for site 2, PDHK3> PDHK4 > PDHK2 > PDHK1. Only PDHK1 phosphorylates site 3. PDHA1 deficiency is the most common enzyme defect in patients with primary lactic acidosis.

Protein type: Carbohydrate Metabolism - glycolysis and gluconeogenesis; Carbohydrate Metabolism - butanoate; EC 1.2.4.1; Amino Acid Metabolism - valine, leucine and isoleucine biosynthesis; Carbohydrate Metabolism - citrate (TCA) cycle; Oxidoreductase; Mitochondrial; Carbohydrate Metabolism - pyruvate

Chromosomal Location of Human Ortholog: Xp22.1

Cellular Component: mitochondrion; mitochondrial matrix; pyruvate dehydrogenase complex; nucleus

Molecular Function: pyruvate dehydrogenase activity; pyruvate dehydrogenase (acetyl-transferring) activity

Biological Process: acetyl-CoA biosynthetic process from pyruvate; cellular metabolic process; glycolysis; tricarboxylic acid cycle; glucose metabolic process; regulation of acetyl-CoA biosynthetic process from pyruvate; pyruvate metabolic process

Disease: Pyruvate Dehydrogenase E1-alpha Deficiency

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