FGFR-4 Protein, Mouse (HEK293, His)

FGFR-4 protein is a tyrosine protein kinase that serves as a cell surface receptor for fibroblast growth factor and controls proliferation, differentiation, migration, lipid metabolism, bile acid biosynthesis, glucose uptake, vitamin D metabolism, and phosphate and other cellular processes homeostasis. It significantly downregulates CYP7A1 in response to FGF19. FGFR-4 Protein, Mouse (HEK293, His) is the recombinant mouse-derived FGFR-4 protein, expressed by HEK293 , with C-His labeled tag. The total length of FGFR-4 Protein, Mouse (HEK293, His) is 196 a.a., with molecular weight of 58-80 kDa.

FGFR-4 Protein is a tyrosine-protein kinase that acts as a cell-surface receptor for fibroblast growth factors, regulating cell proliferation, differentiation, migration, lipid metabolism, bile acid biosynthesis, glucose uptake, vitamin D metabolism, and phosphate homeostasis. It is essential for the normal down-regulation of CYP7A1 expression, the enzyme involved in bile acid synthesis, in response to FGF19. Upon ligand binding, FGFR-4 phosphorylates PLCG1 and FRS2, leading to the activation of multiple signaling cascades. Activation of PLCG1 results in the production of diacylglycerol and inositol 1,4,5-trisphosphate. Phosphorylation of FRS2 recruits GRB2, GAB1, PIK3R1, and SOS1, activating the RAS, MAPK1/ERK2, MAPK3/ERK1, and AKT1 signaling pathways. FGFR-4 also facilitates the SRC-dependent phosphorylation and lysosomal degradation of MMP14, a matrix protease, with MMP14 aiding in the internalization and degradation of FGFR-4. In addition, FGFR-4 plays a role in postnatal lung development and may be involved in skeletal muscle cell lineage development.

Measured by its ability to inhibit FGF acidic-dependent proliferation of NIH-3T3 mouse fibroblast cells. The ED₅₀ of this effect is 8.197 ng/ml in the presence of 2 ng/mL FGF-acidic, corresponding to a specific activity is 1.219×10⁵ units/mg.

Mouse

HEK293

C-6*His

Q03142/NP_032037.2 (L17-D366)

14186  [NCBI]

LSLEASEEMEQEPCLAPILEQQEQVLTVALGQPVRLCCGRTERGRHWYKEGSRLASAGRVRGWRGRLEIASFLPEDAGRYLCLARGSMTVVHNLTLLMDDSLTSISNDEDPKTLSSSSSGHVYPQQAPYWTHPQRMEKKLHAVPAGNTVKFRCPAAGNPMPTIHWLKDGQAFHGENRIGGIRLRHQHWSLVMESVVPSDRGTYTCLVENSLGSIRYSYLLDVLERSPHRPILQAGLPANTTAVVGSDVELLCKVYSDAQPHIQWLKHVVINGSSFGADGFPYVQVLKTTDINSSEVEVLYLRNVSAEDAGEYTCLAGNSIGLSYQSAWLTVLPEEDLTWTTATPEARYTD

Approximately 58-80 kDa due to the glycosylation.

Greater than 95% as determined by reducing SDS-PAGE

Lyophilized powder.

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.