DA3532X VEGFR-1 / Flt-1

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20 µg / €280.00
Please visit the country specific website of OriGene Technologies or contact your local Distributor to buy this product.

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VEGFR-1 / Flt-1


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  • DA3532X
  • DA3532X

Product Description for VEGFR-1 / Flt-1

VEGFR-1 / Flt-1.
Presentation: Purified

Properties for VEGFR-1 / Flt-1

Product Category Proteins & Growth Factors
Quantity 20 µg
Synonyms FLT, FLT1, FRT, Fms-like tyrosine kinase 1, Tyrosine-protein kinase FRT, Tyrosine-protein kinase receptor FLT, VEGF Receptor 1, VEGFR1, Vascular endothelial growth factor receptor 1, Vascular permeability factor receptor
Presentation Purified
Molecular weight 96 kDa
Source Insect cells
Species (Protein) Human
Shipping to Worldwide
PDF datasheet View Datasheet
Manufacturer OriGene Technologies GmbH

Datasheet Extract

Swiss Prot Num:
Purity > 95 % pure by SDS-PAGE and visualised by silver stain
Background Endothelial cells express three different vascular endothelial growth factor (VEGF) receptors, belonging to the family of receptor tyrosine kinases (RTKs). They are named VEGFR-1 (Flt-1), VEGFR-2 (KDR/Flk-1), and VEGFR-3 (Flt-4). Their expression is almost exclusively restricted to endothelial cells, but VEGFR-1 can also be found on monocytes, dendritic cells and on trophoblast cells. The flt-1 gene was first described in 1990. The receptor contains seven immunoglobulin -like extracellular domains, a single transmembrane region and an intracellular split tyrosine kinase domain. Compared to VEGFR-2 the Flt-1 receptor has a higher affinity for VEGF but a weaker signaling activity. VEGFR-1 thus leads not to proliferation of endothelial cells, but mediates signals for differentiation. Interestingly, a naturally occuring soluble variant of VEGFR-1 (sVEGFR-1) was found in HUVEC supernatants in 1996, which is generated by alternative splicing of the flt-1 mRNA. The biological functions of sVEGFR-1 still are not clear, but it seems to be an endogenous regulator of angiogenesis, binding VEGF with the same affinity as the full-length receptor.
General Readings
  1. Röckl et al., Exp Cell Res 241:161, 1998
  2. Barleon et al., J Biol Chem 272:10382, 1997
Storage Store lyophilized at 2-8°C for 6 months or at -20°C long term.
After reconstitution store the antibody undiluted at 2-8°C for one month 
or (in aliquots) at -20°C long term.
Avoid repeated freezing and thawing.
Shelf life: one year from despatch.
Recombinat Human soluble Vascular Endothelial Growth Factor Receptor-1 (sVEGFR-1) is the naturally occurring form and was cloned from total RNA of Human Umbilical Vein Endothelial cells.
The recombinant mature sVEGFR-1 is a glycosylated monomeric protein with a mass of approximately 96 kDa. The soluble receptor protein contsists of the first 6 extracellular domains (Met1-His688) containing the unique 31 amino acids residues at the C-terminus. 
Result by N-terminal sequencing: SKLKD 
Length: 661 amino acids. 
mRNA RefSeq: NM_0001159920
AA Sequence:
Biological activity:
The activity of sVEGFR-1 was determined by its ability to inhibit the VEGF-A-induced proliferation of HUVECs.
Molecular weight:
Buffer System:
Endotoxin level:
< 0.1 ng per µg of sVEGFR-1
>95% pure by SDS-PAGE and visualised by silver stain
Lyophilized protein
Soluble in water and most aqueous buffers.
The lyophilized sVEGFR-1 should be restored in PBS to a concentration not lower than 0.1 ng/ml.
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