rHuman VEGF-121 Protein

Application Note: VEGF-121 protein has been tested by SDS-PAGE and is suitable as a control for polyclonal or monoclonal anti-VEGF-121 in immunological assays.

Concentration Value: 0.1 mg/mL

General Disclaimer Note: This product is for research use only and is not intended for therapeutic or diagnostic applications. Please contact a technical service representative for more information. All products of animal origin manufactured by Rockland Immunochemicals are derived from starting materials of North American origin. Collection was performed in United States Department of Agriculture (USDA) inspected facilities and all materials have been inspected and certified to be free of disease and suitable for exportation. All properties listed are typical characteristics and are not specifications. All suggestions and data are offered in good faith but without guarantee as conditions and methods of use of our products are beyond our control. All claims must be made within 30 days following the date of delivery. The prospective user must determine the suitability of our materials before adopting them on a commercial scale. Suggested uses of our products are not recommendations to use our products in violation of any patent or as a license under any patent of Rockland Immunochemicals, Inc. If you require a commercial license to use this material and do not have one, then return this material, unopened to: Rockland Inc., P.O. BOX 5199, Limerick, Pennsylvania, USA.

Other Performance Data: 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 0.1-0.4 ng/ml. Endotoxin Level: Measured by LAL is <0.01ng/µg or <0.1EU/µg.

Physical State: Lyophilized

Purity and Specificity: Purity was determined to be greater than 95% as determined by analysis by RP-HPLC, and by reducing and non-reducing SDS-PAGE, against known standard.

Background: Vascular endothelial growth factor-A was originally isolated from tumor cells and referred to as Tumor Angiogenesis 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, vascular permeability, cell migration, and endothelial cell proliferation and growth, it may play a role in stimulating vasolidation via nitric oxide-dependent pathways and in inhibition of apoptosis. VEGF binds to the FLT1/VEGFR1 and KDR/VEGFR2 receptors, heparan sulfate and heparin. 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. VEGF121 is acidic, freely secreted, and widely expressed. This isoform is produced by alternative promoter usage and alternative initiation. It starts at an alternative upstream CUG codon and is post-translationally processed to produce the secreted VEGF peptide and a N-terminal peptide N-VEGF. The unprocessed protein and the N-VEGF peptide may localize to the nucleus, the endoplasmic reticulum and the Golgi or the extracellular matrix. Recombinant Human VEGF-121 produced in E.coli is a double, non-glycosylated, polypeptide chain containing 121 amino acids and having a molecular mass of 28423 Daltons.

Low Endotoxin: Yes

Other: User Optimized

• Artikelnummer: ROC009-001-C23
• Hersteller: Rockland
• Hersteller Artikelnummer: 009-001-C23
• Verpackungseinheit: 10 µg
• Mengeneinheit: STK
• Methode: SDS-PAGE
• Konjugat: Unconjugated