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You are here:Home » Growth Factors, Cytokines » Growth Factors-VEGF » Vascular Endothelial Growth Factor 165, Recombinant, Human (VEGF 165)

Vascular Endothelial Growth Factor 165, Recombinant, Human (VEGF 165)

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Specifications

Vascular endothelial growth factor-A was originally isolated from tumor cells and referred to as Tumor Angiogenesis Factor or Vascular Permeability Factor. Although expressed at high levels in certain tumor-derived cells it is produced by a wide variety of cell types. In addition to stimulating vascular growth and vascular permeability it may play a role in stimulating Vasolidation via nitric oxide-dependent pathways. Alternative splicing of the mRNA for VEGF-A results in several isoforms of the protein being produced. Rat and bovine VEGF are one amino acid shorter than the human factor, and the bovine and human sequences show a homology of 95 percent.
In contrast to other factors mitogenic for endothelial cells such as FGF-1, FGF-2 and PDGF, VEGF is synthesized as a precursor containing a typical hydrophobic secretory signal sequence of 26 amino acids. Glycosylation is not required for efficient secretion of VEGF
Catalog #V2110-15E1
AA SequenceThe sequence of the first five N-terminal amino acids was determined and was found to be Ala-Pro-Met-Ala-Glu.
Biological Activity The biological activity is determined by the dose-dependent stimulation of the proliferation of human umbilical vein endothelial cells (HUVEC) using a concentration range of 3.7-5.6ng/ml.
Storage and StabilityMay be stored at 4°C for short-term only. For long-term storage, aliquot and store at -20°C. Aliquots are stable for 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Molecular Weight38.2kD
SourceRecombinant, human, E. coli
Purity95% as determined by RP-HPLC; Reducing and non-reducing SDS-PAGE. Endotoxin: 0.1EU/ug (LAL).
Concentration~1mg/ml
FormSupplied as a liquid with no additives.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.


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