Recombinant Human VEGF/PlGF Heterodimer Protein

Formulations:
Catalog # Availability Size / Price Qty
297-VP-005
Product Details
Citations (4)
FAQs
Reviews

Recombinant Human VEGF/PlGF Heterodimer Protein Summary

Purity
>97%, 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.
Activity
Measured in a cell proliferation assay using HUVEC human umbilical vein endothelial cells. Conn, G. et al. (1990) Proc. Natl. Acad. Sci. USA 87:1323. The ED50 for this effect is 15‑75 ng/mL.
Source
E. coli-derived human VEGF/PlGF Heterodimer protein
Human VEGF
(Ala27-Arg191)
Accession # AAM03108
Human PlGF
(Ala21-Arg149)
Accession # AAD30179
N-terminus C-terminus
N-terminal Sequence
Analysis
Ala27 (VEGF) & Ala21 (PlGF)
Structure / Form
Disulfide-linked heterodimer
Predicted Molecular Mass
19 kDa (VEGF) & 14.5 kDa (PIGF)

Product Datasheets

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.

297-VP

Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA with BSA as a carrier protein.
Reconstitution Reconstitute at 50 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
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.

297-VP/CF

Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
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.
Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: VEGF/PlGF Heterodimer

The disulfide-linked homodimeric proteins vascular endothelial growth factor (VEGF) and placenta growth factor (PlGF) are both members of the VEGF family of growth factors. VEGF and PlGF proteins share primary structural as well as limited amino acid sequence homology with the A and B chains of PDGF. All eight cysteine residues involved in intra- and inter-chain disulfides are conserved among these growth factors. In their PDGF-like regions, VEGF and PlGF also share approximately 53% amino acid sequence similarity. E. coli-expressed monomers of PlGF and VEGF can be refolded in vitro to form PlGF/VEGF heterodimers. The purified recombinant VEGF/PlGF heterodimers and VEGF homodimers have potent mitogenic effects on endothelial cells. However, VEGF/PlGF heterodimers display approximately 50-fold less mitogenic activity than VEGF homodimers. In contrast, PlGF homodimers have little or no mitogenic effect on endothelial cells. The presence of natural VEGF/PlGF heterodimers in the conditioned media of a number of human tumor cell lines has been demonstrated using a VEGF/PlGF heterodimer specific ELISA.

Long Name
Vascular Endothelial Growth Factor/Placenta Growth Factor Heterodimer
Alternate Names
VEGF/PlGF Heterodimer

Citations for Recombinant Human VEGF/PlGF Heterodimer Protein

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

4 Citations: Showing 1 - 4
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  1. Full Functional Knockout of Placental Growth Factor by Knockin with an Inactive Variant Able to Heterodimerize with VEGF-A
    Authors: I Apicella, V Cicatiello, D Acampora, V Tarallo, S De Falco
    Cell Rep, 2018;23(12):3635-3646.
    Species: Mouse
    Sample Types: In Vivo
    Applications: In Vivo
  2. Placental growth factor neutralising antibodies give limited anti-angiogenic effects in an in vitro organotypic angiogenesis model.
    Authors: Brave SR, Eberlein C, Shibuya M, Wedge SR, Barry ST
    Angiogenesis, 2010;13(4):337-47.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  3. Microvascular patterning is controlled by fine-tuning the Akt signal.
    Authors: Sun JF, Phung T, Shiojima I, Felske T, Upalakalin JN, Feng D, Kornaga T, Dor T, Dvorak AM, Walsh K, Benjamin LE
    Proc. Natl. Acad. Sci. U.S.A., 2005;102(1):128-33.
    Species: Bovine
    Sample Types: Whole Cells
    Applications: Bioassay
  4. A critical role of placental growth factor in the induction of inflammation and edema formation.
    Authors: Oura H, Bertoncini J, Velasco P, Brown LF, Carmeliet P, Detmar M
    Blood, 2002;101(2):560-7.
    Species: Mouse
    Sample Types: In Vivo
    Applications: In Vivo

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