Loaded Human FGFR2IIIb-Fc on AR2G Biosensor, can bind Anti-Human FGFR2b mAb with an affinity constant of 1.25 pM as determined in BLI assay.  (Regularly tested)

FGFR2IIIb Protein, Human, Recombinant (hFc) is expressed in HEK293 mammalian cells with C-Fc tag. The predicted molecular weight is 70-90 KDa and the accession number is P21802-3.

Human

HEK293 Cells

KGFR,FGFR2IIIb,FGFR2b,FGFR2 β,FGFR2 beta,FGFR2,FGF R2b,CD332,BFR-1

Arg152-Glu378

Arg152-Glu378

Greater than 95% as determined by reducing SDS-PAGE. Greater than 95% as determined by SEC-HPLC.

Reconstitute the lyophilized protein in distilled water. The product concentration should not be less than 100 μg/ml. Before opening, centrifuge the tube to collect powder at the bottom. After adding the reconstitution buffer, avoid vortexing or pipetting for mixing.

Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.

FGFR2, also known as CD332, belongs to the fibroblast growth factor receptor subfamily where amino acid sequence is highly conserved between members and throughout evolution. FGFR2 acts as cell-surface receptor for fibroblast growth factors and plays an essential role in the regulation of cell proliferation, differentiation, migration and apoptosis, and in the regulation of embryonic development. Four distinct genes encoding closely related FGF receptors, FGF R1 - 4, are known. A frequent splicing event involving FGF R1 and 2 results in receptors containing all three Ig domains, referred to as the alpha isoform, or only IgII and IgIII, referred to as the beta isoform. Only the alpha isoform has been identified for FGF R3 and FGF R4. FGFR2 signaling is down-regulated by ubiquitination, internalization and degradation. Mutations that lead to constitutive kinase activation or impair normal FGFR2 maturation, internalization and degradation lead to aberrant signaling. Over-expressed FGFR2 promotes activation of STAT1.