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Recombinant Mouse PDGF R alpha Fc Chimera Protein, CF

Catalog # 1062-PR | R&D Systems, Inc. a Bio-Techne Brand
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1062-PR-050

Key Product Details

Source

NS0

Accession #

Structure / Form

Disulfide-linked homodimer

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

Mouse myeloma cell line, NS0-derived mouse PDGF R alpha protein
Mouse PDGF R alpha
Leu25-Glu524
(Asp65Glu, Gly439Ala, Thr440Ala)
Accession # P26618.3
IEGRMD Human IgG1
(Pro100-Lys330)
N-terminus C-terminus

Purity

>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

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

N-terminal Sequence Analysis

Leu25

Predicted Molecular Mass

82.5 kDa (monomer)

SDS-PAGE

125-140 kDa, reducing conditions

Activity

Measured by its ability to inhibit the biological activity of PDGF-AB or PDGF-AA using NR6R‑3T3 mouse fibroblast cells. Raines, E.W. et al. (1985) Methods Enzymol. 109:749.
The ED50 for this effect is 0.01-0.04 µg/mL in the presence of 10 ng/mL recombinant human PDGF-AA.

Formulation, Preparation and Storage

1062-PR
Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution
Reconstitute at 100 μg/mL in sterile PBS.

Reconstitution Buffer Available:
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Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
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.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: PDGF R alpha

PDGF R alpha (platelet-derived growth factor receptor alpha) is a type I transmembrane glycoprotein in the class III subfamily of receptor tyrosine kinases (RTK) (1-3). PDGF R alpha and PDGF R beta can form homo- or hetero-dimeric receptors when engaged by dimers of the PDGF family of growth factors, which include disulfide-linked homodimers of PDGF-A, B, C or D, or the heterodimer PDGF-AB that is mainly found in human platelets. While multiple in vitro ligand-receptor combinations have been identified, in vivo evidence indicates that PDGF R alpha primarily binds PDGF-AA and PDGF-CC, while PDGF R beta primarily binds PDGF-BB and probably PDGF-DD. Like all class III RTKs, the extracellular domain (ECD) of mouse PDGF R alpha (amino acids 25-525) contains five immunoglobulin-like domains, while the intracellular region contains a split tyrosine kinase domain (aa 593‑954). Within the ECD, mouse PDGF R alpha shares 85%, 93%, 84%, 84%, and 81% amino acid sequence identity with human, rat, equine, canine and bovine PDGF R alpha respectively. PDGF R alpha autophosphorylates upon dimerization, activating signaling cascades in PI 3-kinase Ras-MAP kinase, and PLC-gamma pathways (1, 2). Signaling is down‑regulated by SHP-2 phosphatase activity and by receptor endocytosis and lysosomal degradation. PDGF R alpha is expressed at low levels in most mesenchymal cells, but is strongly expressed in oligodendrocyte, lung, skin and intestinal progenitor cells and induced by inflammation or growth in culture (1-3). During development, mesenchymal cells expressing PDGF R alpha respond to local gradients of epithelially produced PDGF-AA or PDGF-CC during formation of the cranial and cardiac neural crest, retina, gonads, lung alveoli, intestinal villi, skin, hair follicles, skeleton, teeth, palate, and interstitial kidney mesenchyme (1, 4). Deletion of PDGF R alpha in mice severely impairs mesenchymal derivatives in both embryo and extraembryonic tissues, and high or low PDGF R alpha signaling in humans may result in spina bifida or cleft palate‑type malformations. Postnatally, PDGF R alpha is implicated in gliomas and fibrotic disorders of lung, heart and skin (scleroderma) (5- 7).

References

  1. Andrae, J. et al. (2008) Genes Dev. 22:1276.
  2. Heldin, C-H. and B. Westermark (1999) Physiol. Rev. 79:1283.
  3. Do, M.S. et al. (1992) Oncogene 7:1567.
  4. Klinghoffer, R.A. et al. (2002) Dev. Cell 2:103.
  5. Martinho, O. (2009) Br. J. Cancer 101:973.
  6. Olson, L.E. and P. Soriano (2009) Dev. Cell 16:303.
  7. Baroni, S.S. et al. (2006) N. Engl. J. Med. 354:2667.

    Long Name

    Platelet-derived Growth Factor Receptor alpha

    Alternate Names

    CD140a, PDGFR alpha, PDGFRA

    Entrez Gene IDs

    5156 (Human); 18595 (Mouse)

    Gene Symbol

    PDGFRA

    UniProt

    Product Documents for Recombinant Mouse PDGF R alpha Fc Chimera Protein, CF

    Certificate of Analysis

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    Product Specific Notices for Recombinant Mouse PDGF R alpha Fc Chimera Protein, CF

    For research use only

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