Cell Signaling Technology

Product Pathways - Tyrosine Kinase/ Adaptors

PDGF Receptor β (28E1) Rabbit mAb #3169

Applications Reactivity Sensitivity MW (kDa) Isotype
W IP IHC-P IHC-F IF-IC H M R Endogenous 190 Rabbit IgG

Applications Key:  W=Western Blotting  IP=Immunoprecipitation  IHC-P=Immunohistochemistry (Paraffin)  IHC-F=Immunohistochemistry (Frozen)  IF-IC=Immunofluorescence (Immunocytochemistry)
Reactivity Key:  H=Human  M=Mouse  R=Rat
Species cross-reactivity is determined by Western blot.

Specificity / Sensitivity

PDGF Receptor β (28E1) Rabbit mAb detects endogenous levels of PDGF receptor β protein. The antibody may cross-react with PDGF receptor α when highly overexpressed.

Source / Purification

Monoclonal antibodies are produced by immunizing rabbits with a GST fusion protein containing a carboxy-terminal fragment of human PDGF receptor β.

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell lines, using PDGF Receptor β (28E1) Rabbit mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human colon carcinoma using PDGF Receptor β (28E1) Rabbit mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human glioblastoma using PDGF Receptor β (28E1) Rabbit mAb.


IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded U-87MG cells, showing membrane localization, using PDGF Receptor β (28E1) Rabbit mAb.

IHC-F (frozen)

IHC-F (frozen)

Immunohistochemical analysis of frozen U-87MG xenograft using PDGF Receptor beta (28E1) Rabbit mAb.

IF-IC

IF-IC

Immunofluorescent analysis of untreated NIH/3T3 cells, using PDGF Receptor β (28E1) Rabbit mAb (left) or secondary antibody alone (right).


IF-IC

IF-IC

Confocal immunofluorescent analysis of NIH/3T3 cells, serum-starved (left) or PDGF-treated (right), using PDGF Receptor beta (28E1) Rabbit mAb (green). Blue pseudocolor = DRAQ5™ (fluorescent DNA dye).

Background

The proteins of the platelet derived growth factor (PDGF) family exist as several disulphide-bonded, dimeric isoforms (PDGF AA, PDGF AB, PDGF BB, PDGF CC and PDGF DD) that bind in a specific pattern to two closely related receptor tyrosine kinases, PDGF receptor α (PDGFRα) and PDGF receptor β (PDGFRβ). PDGFRα and PDGFRβ share 75% to 85% sequence homology between their two intracellular kinase domains while the kinase insert and carboxy-terminal tail regions display a lower level (27% to 28%) of homology (1). PDGF Receptor α homodimers bind all PDGF isoforms except those containing PDGF D. PDGF Receptor β homodimers bind PDGF BB and DD isoforms, as well as the PDGF AB heterodimer. The heteromeric PDGFα/β receptor binds PDGF B, C, and D homodimers as well as the PDGF AB heterodimer (2). PDGFRα and PDGFRβ can each form heterodimers with EGFR, which is also activated by PDGF (3). Various cells differ in the total number of receptors present and in the receptor subunit composition, which may account for responsive differences among cell types to PDGF binding (4). Ligand binding induces receptor dimerization and autophosphorylation, followed by binding and activation of cytoplasmic SH2 domain-containing signal transduction molecules such as Grb2, Src, GAP, PI3 kinase, PLCγ and Nck. A number of different signaling pathways are initiated by activated PDGF receptors and lead to control of cell growth, actin reorganization, migration and differentiation (5). Tyr751 in the kinase-insert region of PDGFRβ is the docking site for PI3 kinase (6). Phosphorylated pentapeptides derived from Tyr751 of PDGFRβ (pTyr751-Val-Pro-Met-Leu) inhibit the association of the carboxy-terminal SH2 domain of the p85 subunit of PI3 kinase with PDGFRβ (7). Tyr740 is also required for PDGFRβ mediated PI3 kinase activation (8).

  1. Deuel, T.F. et al. (1988) Biofactors 1, 213-217.
  2. Bergsten, E. et al. (2001) Nat. Cell Biol. 3, 512-516.
  3. Betsholtz, C. et al. (2001) Bioessays 23, 494-507.
  4. Coughlin, S.R. et al. (1988) Prog. Clin. Biol. Res. 266, 39-45.
  5. Ostman, A. and Heldin, C.H. (2001) Adv. Cancer Res. 80, 1-38.
  6. Panayotou, G. et al. (1992) EMBO J. 11, 4261-4272.
  7. Ramalingam, K. et al. (1995) Bioorg. Med. Chem. 3, 1263-1272.
  8. Kashishian, A. et al. (1992) EMBO J. 11, 1373-1382.

Application References

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Companion Products

Rabbit Monoclonals Produced Using Epitomics® Technology, U.S. Patent No. 5,675,063.

This product is for in vitro research use only and is not intended for use in humans or animals. This product is not intended for use as therapeutic or in diagnostic procedures.

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