All three VEGF receptors belong to the class III subfamily of receptor tyrosine kinases (RTKs) characterized by the seven immunoglobulin-like loops in the extracellular domain. The expression of VEGFR-1 to -3 is almost exclusively restricted to hematopoietic precursor cells, vascular and lymphatic endothelial cells and to the monocyte/macrophage lineage. They play key roles in vasculogenesis, hematopoiesis, angiogenesis and lymphangiogenesis. Mature VEGFR-3/FLT-4 is composed of a 751 aa residue extracellular domain, a 22 aa transmembrane domain and a 482 aa residue cytoplasmic domain. Both VEGF family members VEGF-C and VEGF-D have been shown to bind and activate VEGFR-3/FLT-4. The Flt-4 gene is widely expressed in the early embryo but becomes restricted to the lymphatic endothelial a latter stages of development. It is important for lymphangiogenesis. Recombinant human sVEGFR-3/FLT-4 was fused with a carboxy-terminal 6X histidine-tag. The recombinant mature sVEGFR-3/FLT-4 is a glycosylated monomeric protein. The sVEGFR-3/FLT-4 monomers have a mass of approximately 120 kDa. The soluble receptor protein consists of all 7 extracellular domains (Met1-Glu774).
Human FLT4 expressed in Insect cells
CAT# CSC-CTK0405-10 (10 μg); CAT# CSC-CTK0405-50 (50 μg)
Greater than 90% as determined by SDS-PAGE analysis.
Measured by its ability to bind recombinant rat VEGF-C in a functional solid phase binding assay. Immobilised recombinant human sVEGFR-3/FLT-4 at 5 μg/ml can bind recombinant rat VEGF-C in a linear range of 8-500 ng/ml.
Less than 1 EU/μg.
Lyophilized (freeze-dried), sterile powder. Lyophilized with no additives.
Please centrifuge product briefly before opening vial. The lyophilized protein should be reconstituted in sterile PBS, medium or ultra-pure water to a concentration of 0,1 - 1,0 mg/ml. This solution can then be diluted into other aqueous buffers and stored at -20°C for future use.
Storage & Stability
The lyophilized protein, though stable at room temperature for up to 3 weeks, is best stored desiccated at -20°C. Reconstituted rHu sVEGFR-3 should be used immediately or stored long- term in undiluted working aliquots at -20°C. Avoid repeated freeze-thaw cycles.
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