Recombinant Human PDGF-BB, Biotinylated Protein

R&D Systems, part of Bio-Techne | Catalog # BT220

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Carrier Free
BT220-010/CF
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With Carrier
BT220-010
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Key Product Details

  • R&D Systems E. coli-derived Recombinant Human PDGF-BB, Biotinylated Protein (BT220)
  • Quality control testing to verify active proteins with lot specific assays by in-house scientists
  • All R&D Systems proteins are covered with a 100% guarantee

Source

E. coli

Accession #

P01127.1

Structure / Form

Disulfide-linked homodimer, biotinylated protein via amines

Conjugate

Biotin

Applications

Bioactivity

View all PDGF-BB Proteins and Enzymes »

Product Specifications

Source

E. coli-derived human PDGF-BB protein
Ser82-Thr190

Purity

>95%, by SDS-PAGE with silver staining.

Endotoxin Level

<1.0 EU per 1 μg of the protein by the LAL method.

Predicted Molecular Mass

12 kDa (unlabeled)

SDS-PAGE

12 kDa, reducing conditions

Activity

Measured in a cell proliferation assay using NR6R-3T3 mouse fibroblast cells. Raines, E.W. et al. (1985) Methods Enzymol. 109:749.
The ED50 for this effect is 1.5-6 ng/mL.

Scientific Data Images for Recombinant Human PDGF-BB, Biotinylated Protein

Recombinant Human PDGF-BB, Biotinylated Protein Bioactivity

Recombinant Human PDGF-BB, Biotinylated Protein Bioactivity

Both Biotinylated Recombinant Human PDGF-BB (Catalog # BT220) and unlabeled Recombinant Human PDGF-BB (Catalog # 220-BB) stimulate NR6R-3T3 mouse fibroblast cell proliferation. The ED50 for this effect is 1.5-6 ng/mL. The similarity in activity highlights that the biotinylated protein is fully functional.

Formulation, Preparation and Storage

Carrier Free
What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

Carrier: BT220
Formulation Lyophilized from a 0.2 μm filtered solution in HCl with BSA as a carrier protein.
Reconstitution Reconstitute at 100 μg/mL in 4 mM HCl.
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.
Carrier Free: BT220/CF
Formulation Lyophilized from a 0.2 μm filtered solution in HCl.
Reconstitution Reconstitute at 100 μg/mL in 4 mM HCl.
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-BB

Platelet-Derived Growth Factor (PDGF)-BB is synthesized as a 35 kDa, 241 amino acid (aa) prepro-precurser. It contains a signal peptide, an N-terminal prodomain, a mature region, and a C-terminal prodomain (1-4). The propercursor is initially dimerized and then intracellulary processed twice. The N-terminal prodomain is cleaved first, followed by cleavage of the C-terminal prodomain. The resulting mature region is 16-17 kDa in size (or 29-32 kDa as a homodimer) (4). Mature human PDGF-B shares 89% aa sequence identity with mouse mature PDGF-B. PDGF-BB is expressed by hepatocytes and nonresorbing osteoclasts, generating osteoblasts and bone formation (4, 5). It is also produced by platelets, macrophages, and mast cells. At sites of injury, it promotes neutrophil and macrophage infiltration for debridement, fibroblast secretion of new extracellular matrix, and IGF-I-mediated re-epithelialization (6, 7). The traditional receptor for PDGF is either a homodimer or heterodimer created from two type I transmembrane RTKs, PDGF R alpha and PDGF R beta (8, 9). PDGF-BB has been shown to bind the alpha alpha homodimer, alpha beta heterodimer, and the beta beta homodimer in vitro, and act through the beta beta homodimer in vivo (8, 10).

References

  1. Rao, C.D. et al. (1986) Proc. Natl. Acad. Sci. USA 83:2392.
  2. Kaetzel, D.M. et al. (1996) Biochim. Biophys. Acta. 1298:250.
  3. Ostman, A. et al. (1992) J. Cell Biol. 118:509.
  4. Siegfried, G. et al. (2005) Oncogene 24:6925.
  5. Kreja, L. et al. (2010) J. Cell. Biochem. 109:347.
  6. van Steensel, L. et al. (2012) J. Clin. Endocrinol. Metab. 97:E400.
  7. Barrientos, S. et al. (2008) Wound Repair Regen. 16:585.
  8. Andrae, J. et al. (2008) Genes Dev. 22:1276.
  9. Heldin, C.H. and B. Westermark (1999) Physiol. Rev. 79:1283.
  10. Li, X. and U. Eriksson (2003) Cytokine Growth Factor Rev. 14:91.

Long Name

Platelet-derived Growth Factor BB

Alternate Names

PDGFBB

Entrez Gene IDs

5155 (Human); 24628 (Rat)

Gene Symbol

PDGFB

UniProt

P01127.1

Additional PDGF-BB Products

Product Documents for Recombinant Human PDGF-BB, Biotinylated Protein

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Download SDS BT220 (with carrier)
Download SDS BT220/CF (carrier free)

Product Specific Notices for Recombinant Human PDGF-BB, Biotinylated Protein

For research use only

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