Fms-related tyrosine kinase 1 (FLT1 /VEGFR1), recombinant human protein is supplied as a lyophilized powder. It is suitable for use in analysis of protein structure. In general, recombinant proteins can also be used as an immunogen, as a protein standard, or in cell biology research applications.

Since this product is a truncated protein and does not contain intracellular catalytic activity domain, it is not suitable for use in enzyme activity studies.

This recombinant protein was expressed from a DNA sequence encoding the extracellular domain (Met 1-Asn 756) of human FLT1 (P17948-1) fused to a polyhistidine tag at the C-terminus.

Activity: Measured by its ability to inhibit the VEGF-dependent proliferation of human umbilical vein endothelial cells (HUVEC) (Conn, G. et al.,1990 , Proc. Natl. Acad. Sci. USA 87:1323). The ED₅₀ for this effect is typically 5-30 ng/ml in the presence of 5 ng/ml human VEGF165.

Formulation: Lyophilized in PBS, pH7.4, 5% Mannitol, 5% Trehalose, and 0.02% Tween-80.

Reconstitution: Dissolve the protein in sterile double distilled water to a concentration of 0.2 mg/ml or lower. It is recommended that the protein be aliquoted and be used as soon as possible. Store aliquots under sterile conditions at -20°C. Avoid repeated freeze-thaw cycles.

Expiration Date: Expires one year from date of receipt when stored as instructed.

This protein is manufactured by SINO Biological.