Human VEGF121 Protein

• Catalog Number: orb257918
• Category: Proteins
• Description: Vascular endothelial growth factor (VEGF) is also known as vascular permeability factor (VPF) and VEGF-A, and is a member of the platelet-derived growth factor (PDGF)/vascular endothelial growth factor (VEGF) family and encodes a protein that is often found as a disulfide linked homodimer. This protein is a glycosylated mitogen that specifically acts on endothelial cells and has various effects, including mediating increased vascular permeability, inducing angiogenesis, vasculogenesis and endothelial cell growth, promoting cell migration, and inhibiting apoptosis. Alternatively spliced transcript variants, encoding either freely secreted or cell-associated isoforms, have been characterized. Alternatively spliced isoforms of 121,145,165,183,189 and 206 amino acids in length are expressed in humans. VEGF165 appears to be the most abundant and potent isoform, followed by VEGF121 and VEGF189. VEGF121 is the only form that lacks a basic heparinbinding region and is freely diffusible. Mouse embryos expressing only the corresponding isoform (VEGF120) do not survive to term, and show defects in skeletogenesis. Human VEGF121 shares 87% aa sequence identity with corresponding regions of mouse and rat, 93% with feline, equine and bovine, and 91%, 95% and 96% with ovine, canine and porcine VEGF, respectively. VEGF121 induces the proliferation of lymphatic endothelial cells. The lymphangiogenesis may be promoted by upregulation of VEGF121, which may in turn act in part via induction of VEGF-C.
• Reactivity: Human
• Tag: Native
• Form/Appearance: Powder
• Purity: 95%
• Conjugation: Unconjugated
• MW: 14.1 kDa
• Target: VEGF121
• Source: Human VEGF121 Protein, premium grade (orb257918) is expressed from human 293 cells (HEK293). It contains AA Ala 27 - Arg 147 (Accession # P15692-9).
• Expression System: HEK293
• Biological Activity: Immobilized Human VEGF121 Protein, premium grade at 2 μg/mL (100 μL/well) can bind Human VEGF R2, Strep Tag with a linear range of 0.15-2.5 μg/mL (QC tested).
• Expression Region: Ala 27 - Arg 147
• Endotoxins: 0.1 EU per μg
• NCBI: NP_001165099.1
• Storage: -20°C to -70°C for 12 months in lyophilized state; -70°C for 3 months under sterile conditions after reconstitution. For long term storage, the product should be stored at lyophilized state at -20°C or lower.
• Buffer/Preservatives: PBS, pH7.4
• Alternative names: RP1-261G23.1,MGC70609,MVCD1,VEGFA,VPF
• Note: For research use only
• Application notes: This protein carries no "tag". The protein has a calculated MW of 14.1 kDa. As a result of glycosylation, the protein migrates as 15-16 kDa and 17-20 kDa under reducing (R) condition, and 30-40 kDa under non-reducing (NR) condition (SDS-PAGE).
• Expiration Date: 6 months from date of receipt.

References

Stafford, Ryan L. et al. In vitro Fab display: a cell-free system for IgG discovery Protein Eng Des Sel, 27, 97-109 (2014)

PubMed: 24586053

SDS-PAGE analysis of Human VEGF protein

Line graph illustrates about the sensitivity range of Human VEGF protein using different concentrations

Immobilized Human VEGF121 Protein, premium grade (Cat. No. orb257918) at 2 μg/mL (100 μL/well) can bind Human VEGF R2, Strep Tag with a linear range of 0.15-2.5 μg/mL (QC tested).