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.
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 ED 50 for this effect is 1.5-7.5 ng/mL.
Source
E. coli-derived Pro28-Arg190
Accession #
N-terminal Sequence
AnalysisPro28
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
19 kDa (monomer)
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.
1603-CV |
| 1603-CV/CF |
Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA with BSA as a carrier protein. | Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA. | |
Reconstitution Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin. | 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. | 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.
| Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
Background: VEGF
Vascular endothelial growth factor (VEGF or VEGF-A), also known as vascular permeability factor (VPF), is a potent mediator of both angiogenesis and vasculogenesis in the fetus and adult. It is a member of the PDGF family that is characterized by the presence of eight conserved cysteine residues. In human, at least eight alternately spliced isoforms of VEGF ranging from 206 amino acids (aa) to 121 aa in length are known. Three isoforms, VEGF188, VEGF182, and VEGF164, have been identified in canine. Canine VEGF164 shares 91%, 90%, and 98% aa sequence identity with the rat, mouse, and feline homologs, respectively. Two type I transmembrane receptor tyrosine kinases, VEGF R1 and VEGF R2, that bind VEGF with high affinity, have been identified. Neuropilin-1, a receptor for semaphorin, also binds VEGF and acts as a co-receptor to enhance the affinity between VEGF and VEGF R2. Neuropilin-1 alone can also mediate VEGF-induced endothelial cell migration. VEGF regulates cell proliferation, migration, and survival of endothelial cells. These functions are partially mediated through the induction of nitric oxide, prostacyclin, and metalloproteinases. Together with angiopoietins or other vascular-specific growth factors, VEGF plays a separate but complementary role in angiogenesis and vasculogenesis (1 - 7).
References:
JingJing, L. et al. (2000) Mol. Cell Biochem. 214:23.
Scheidegger, P. et al. (1999) Biol. Chem. 380:1449.
Thurston, G. (2002) J. Anat. 200:575.
Zachary, I. and Gliki, G. (2001) Cardiovasc. Res. 49:568.
Chevalier, S. (2002) Mol. Cell Endocrinol.189:169.
Robinson, C.J. and Stringer, S.E. (2001) J. Cell. Sci. 114:853.
Wang, L. et al. (2003) J. Biol. Chem. 278:48848.
Long Name:
Vascular Endothelial Growth Factor
Entrez Gene IDs:
7422 (Human); 22339 (Mouse); 83785 (Rat); 281572 (Bovine); 403802 (Canine); 493845 (Feline); 30682 (Zebrafish)
Alternate Names:
MVCD1; VAS; vascular endothelial growth factor A; Vascular permeability factor; Vasculotropin; VEGF; VEGFA; VEGF-A; VEGFMGC70609; VPF; VPFvascular endothelial growth factor
