1. Measured by its binding ability in a functional ELISA. 2. Immobilized human FGF18 at 10 μg/mL (100 μl/well) can bind  Rat FGFR4 , The EC50 of Rat FGFR4 is 1.17 μg/mL. 3. Immobilized mouse FGF18 at 10 μg/mL (100 μl/well) can bind  Rat FGFR4 , The EC50 of Rat FGFR4 is 0.44 μg/mL. 4. Immobilized human bFGF at 10 μg/mL (100 μl/well) can bind  Rat FGFR4 , The EC50 of Rat FGFR4 is 0.163 μg/mL.

FGFR4 Protein, Rat, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 66 kDa and the accession number is Q498D6.

Rat

HEK293 Cells

fibroblast growth factor receptor 4

A DNA sequence encoding the rat FGFR4 (Q498D6) extracellular domain (Met 1-Asp 367) was fused with the Fc region of human IgG1 at the C-terminus. Predicted N terminal: Phe 17

> 90 % as determined by SDS-PAGE

A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information.

It is recommended to store recombinant proteins at -20°C to -80°C for future use. 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.

Fibroblast growth factor receptor 4 (FGFR4) also known as CD334 antigen or tyrosine kinase related to fibroblast growth factor receptor, is a member of the fibroblast growth factor receptor family, where amino acid sequence is highly conserved between members and throughout evolution. FGFR family members differ from one another in their ligand affinities and tissue distribution. A full-length representative protein would consist of an extracellular region, composed of three immunoglobulin-like domains, a single hydrophobic membrane-spanning segment and a cytoplasmic tyrosine kinase domain. The extracellular portion of FGFR4/CD334 interacts with fibroblast growth factors, setting in motion a cascade of downstream signals, ultimately influencing mitogenesis and differentiation. FGFR4/CD334 preferentially binds acidic fibroblast growth factor and, although its specific function is unknown, it is overexpressed in gynecological tumor samples, suggesting a role in breast and ovarian tumorigenesis. FGFR4/CD334 signaling is down-regulated by receptor internalization and degradation; MMP14 promotes internalization and degradation of FGFR4/CD334. Mutations in FGFR4/CD334 lead to constitutive kinase activation or impair normal FGFR4 inactivation lead to aberrant signaling.Cancer ImmunotherapyImmune CheckpointImmunotherapyTargeted Therapy