• Species Reactivity

  Human

• Specificity

  Detects human PDGF R alpha in direct ELISAs and Western blots. In direct ELISAs and Western blots, no cross-reactivity with recombinant human PDGF R beta or recombinant mouse PDGF R alpha is observed.

• Source

  Monoclonal Mouse IgG    ₁ Clone # 35248

• Purification

  Protein A or G purified from hybridoma culture supernatant

• Immunogen

  S. frugiperda insect ovarian cell line     Sf 21-derived recombinant human PDGF R alpha

• Formulation

  Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 μm filtered solution in PBS.

• Endotoxin Level

  <0.10 EU per 1 μg of the antibody by the LAL method.  

• Label

  Unconjugated

Applications

• Recommended    
  Concentration

  Sample

• Western Blot

  1 μg/mL

  Recombinant Human PDGF R alpha (Catalog # ) under non-reducing conditions only

• 
  

• Immunohistochemistry

  8-25 μg/mL

  See below

• 
  

• Neutralization

  Measured by its ability to neutralize PDGF?AA-induced proliferation in the WS?1 human fetal skin fibroblast cell line. The Neutralization Dose (ND    ₅₀) is typically 2-10 μg/mL in the presence of 10 ng/mL Recombinant Human PDGF?AA.

Please Note: Optimal dilutions should be determined by each laboratory for each application.  are available in the Technical Information section on our website.

Data Examples

Preparation and Storage

• Reconstitution

  Reconstitute at 0.5 mg/mL in sterile PBS.

• Shipping

  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

• Stability & Storage

  Use a manual defrost freezer and avoid repeated freeze-thaw cycles.    

• 12 months from date of receipt, -20 to -70 °C as supplied.

• 1 month, 2 to 8 °C under sterile conditions after reconstitution.

• 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: PDGF R alpha

PDGF is a major serum mitogen that can exist as a homo- or heterodimeric protein consisting of disulfide-linked PDGF-A and PDGF-B chains. The PDGF-AA, PDGF?BB and PDGF-AB isoforms have been shown to bind to two distinct cell surface PDGF receptors with different affinities. Whereas PDGF R alpha binds all three PDGF isoforms with high affinity, PDGF R beta binds PDGF?BB and AB, but not PDGF-AA. Both PDGF R alpha and PDGF R beta are members of the class III subfamily of receptor tyrosine kinases (RTK) that also includes the receptors for M-CSF, SCF and Flt3 ligand. All class III RTKs are characterized by the presence of five immunoglobulin-like domains in their extracellular region and a split kinase domain in their intracellular region. PDGF binding induces receptor homo-and heterodimerization and signal transduction. The expression of the alpha and beta receptors is independently regulated in various cell types. Only PDGF R alpha is expressed in oligodendrocyte progenitor cells, mesothelial cell and liver endothelial cells. Soluble PDGF-R alpha has been detected in cell conditioned medium and human plasma. Recombinant soluble PDGF R alpha binds PDGF with high affinity and is a potent PDGF antagonist (1).

• References:

1. Heldin, C.H. and L. Claesson-Welsh (1994) Guidebook to Cytokines and Their Receptors, Nicola, N.A. (ed) Oxford University Press, New York, NY p. 202.

• Long Name:

  Platelet-derived Growth Factor Receptor alpha

• Entrez Gene IDs:

  5156 (Human); 18595 (Mouse)

• Alternate Names:

  alpha-type platelet-derived growth factor receptor; CD140 antigen-like family member A; CD140a antigen; CD140a; EC 2.7.10; EC 2.7.10.1; MGC74795; PDGF R alpha; PDGFR2; PDGFRA; PDGFRA/BCR fusion; PDGF-R-alpha; platelet-derived growth factor receptor, alpha polypeptide; rearranged-in-hypereosinophilia-platelet derived growth factor receptor alphafusion protein; RHEPDGFRA