Product: FGFR3 Antibody
Catalog: AF0160
Description: Rabbit polyclonal antibody to FGFR3
Application: WB IHC IF/ICC
Reactivity: Human, Mouse, Rat
Prediction: Zebrafish, Bovine, Sheep, Dog, Chicken
Mol.Wt.: 95kDa; 88kD(Calculated).
Uniprot: P22607
RRID: AB_2833341

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 100ul $280 In stock
 200ul $350 In stock

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Product Info

WB 1:500-1:3000, IHC 1:50-1:200, IF/ICC 1:100-1:500
*The optimal dilutions should be determined by the end user.

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

Zebrafish(90%), Bovine(90%), Sheep(90%), Dog(90%), Chicken(90%)
FGFR3 Antibody detects endogenous levels of total FGFR3.
Cite Format: Affinity Biosciences Cat# AF0160, RRID:AB_2833341.
The antiserum was purified by peptide affinity chromatography using SulfoLink™ Coupling Resin (Thermo Fisher Scientific).
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.


ACH; CD 333; CD333; CD333 antigen; CEK 2; CEK2; FGFR 3; FGFR-3; FGFR3; FGFR3_HUMAN; Fibroblast growth factor receptor 3 (achondroplasia thanatophoric dwarfism); Fibroblast growth factor receptor 3; Heparin binding growth factor receptor; HSFGFR3EX; Hydroxyaryl protein kinase; JTK 4; JTK4; MFR 3; SAM 3; Tyrosine kinase JTK 4; Tyrosine kinase JTK4; Z FGFR 3;



Expressed in brain, kidney and testis. Very low or no expression in spleen, heart, and muscle. In 20- to 22-week old fetuses it is expressed at high level in kidney, lung, small intestine and brain, and to a lower degree in spleen, liver, and muscle. Isoform 2 is detected in epithelial cells. Isoform 1 is not detected in epithelial cells. Isoform 1 and isoform 2 are detected in fibroblastic cells.

FGFR3 a receptor tyrosine kinase of the highly-conserved FGFR family that binds fibroblast growth factor (FGF). Mutations are associated with thanatophoric dysplasia (TD), craniosynostosis Adelaide type, many craniosynostotic syndromes and bone malformations. Three splice-variant isoforms have been described. Activating point mutations cause dwarfism, including achondroplasia, hypochrondroplasia and thanatophoric dysplasia, and facial and other morphogenetic disorders, including Crouzon syndrome, craniosynostosis Adelaide type, San Diego skeletal displasia and Muenke syndrome. Translocations t(4;14) involving the IgH region are common in multiple myeloma and frequently involve FGFR3.



Score>80(red) has high confidence and is suggested to be used for WB detection. *The prediction model is mainly based on the alignment of immunogen sequences, the results are for reference only, not as the basis of quality assurance.

Model Confidence:
High(score>80) Medium(80>score>50) Low(score<50) No confidence

PTMs - P22607 As Substrate

Site PTM Type Enzyme
S408 Phosphorylation
T410 Phosphorylation
K413 Ubiquitination
S424 Phosphorylation
S444 Phosphorylation
S445 Phosphorylation
T450 Phosphorylation
S524 Phosphorylation
K530 Acetylation
Y577 Phosphorylation P22607 (FGFR3)
S578 Phosphorylation
S596 Phosphorylation
Y599 Phosphorylation
Y607 Phosphorylation
K632 Ubiquitination
Y647 Phosphorylation P22607 (FGFR3)
Y648 Phosphorylation P22607 (FGFR3)
Y724 Phosphorylation P22607 (FGFR3)
Y760 Phosphorylation P22607 (FGFR3)
Y770 Phosphorylation P22607 (FGFR3)
S771 Phosphorylation
T777 Phosphorylation
S787 Phosphorylation

PTMs - P22607 As Enzyme

Substrate Site Source
P22607-3 (FGFR3) Y465 Uniprot
P22607-3 (FGFR3) Y535 Uniprot
P22607-3 (FGFR3) Y536 Uniprot
P22607-1 (FGFR3) Y577 Uniprot
P22607-3 (FGFR3) Y612 Uniprot
P22607 (FGFR3) Y647 Uniprot
P22607 (FGFR3) Y648 Uniprot
P22607-3 (FGFR3) Y658 Uniprot
P22607-1 (FGFR3) Y724 Uniprot
P22607 (FGFR3) Y760 Uniprot
P22607 (FGFR3) Y770 Uniprot
P35222 (CTNNB1) Y142 Uniprot
P40763-2 (STAT3) Y704 Uniprot
P40763 (STAT3) Y705 Uniprot
P42224 (STAT1) Y701 Uniprot
P51812 (RPS6KA3) Y488 Uniprot
P51812 (RPS6KA3) Y529 Uniprot
P51812 (RPS6KA3) Y707 Uniprot
P60484 (PTEN) Y240 Uniprot

Research Backgrounds


Tyrosine-protein kinase that acts as cell-surface receptor for fibroblast growth factors and plays an essential role in the regulation of cell proliferation, differentiation and apoptosis. Plays an essential role in the regulation of chondrocyte differentiation, proliferation and apoptosis, and is required for normal skeleton development. Regulates both osteogenesis and postnatal bone mineralization by osteoblasts. Promotes apoptosis in chondrocytes, but can also promote cancer cell proliferation. Required for normal development of the inner ear. Phosphorylates PLCG1, CBL and FRS2. Ligand binding leads to the activation of several signaling cascades. Activation of PLCG1 leads to the production of the cellular signaling molecules diacylglycerol and inositol 1,4,5-trisphosphate. Phosphorylation of FRS2 triggers recruitment of GRB2, GAB1, PIK3R1 and SOS1, and mediates activation of RAS, MAPK1/ERK2, MAPK3/ERK1 and the MAP kinase signaling pathway, as well as of the AKT1 signaling pathway. Plays a role in the regulation of vitamin D metabolism. Mutations that lead to constitutive kinase activation or impair normal FGFR3 maturation, internalization and degradation lead to aberrant signaling. Over-expressed or constitutively activated FGFR3 promotes activation of PTPN11/SHP2, STAT1, STAT5A and STAT5B. Secreted isoform 3 retains its capacity to bind FGF1 and FGF2 and hence may interfere with FGF signaling.


Autophosphorylated. Binding of FGF family members together with heparan sulfate proteoglycan or heparin promotes receptor dimerization and autophosphorylation on tyrosine residues. Autophosphorylation occurs in trans between the two FGFR molecules present in the dimer. Phosphorylation at Tyr-724 is essential for stimulation of cell proliferation and activation of PIK3R1, STAT1 and MAP kinase signaling. Phosphorylation at Tyr-760 is required for interaction with PIK3R1 and PLCG1.

Ubiquitinated. Is rapidly ubiquitinated after ligand binding and autophosphorylation, leading to receptor internalization and degradation. Subject to both proteasomal and lysosomal degradation.

N-glycosylated in the endoplasmic reticulum. The N-glycan chains undergo further maturation to an Endo H-resistant form in the Golgi apparatus.

Subcellular Location:

Cell membrane>Single-pass type I membrane protein. Cytoplasmic vesicle. Endoplasmic reticulum.
Note: The activated receptor is rapidly internalized and degraded. Detected in intracellular vesicles after internalization of the autophosphorylated receptor.

Cell membrane>Single-pass type I membrane protein.


Cell membrane>Single-pass type I membrane protein.

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionSubcellular location
Tissue Specificity:

Expressed in brain, kidney and testis. Very low or no expression in spleen, heart, and muscle. In 20- to 22-week old fetuses it is expressed at high level in kidney, lung, small intestine and brain, and to a lower degree in spleen, liver, and muscle. Isoform 2 is detected in epithelial cells. Isoform 1 is not detected in epithelial cells. Isoform 1 and isoform 2 are detected in fibroblastic cells.

Subunit Structure:

Monomer. Homodimer after ligand binding. Interacts with FGF1, FGF2, FGF4, FGF6; FGF8, FGF9, FGF10, FGF17, FGF18, FGF19, FGF20 and FGF23 (in vitro). Interacts with KLB. Affinity for fibroblast growth factors (FGFs) is increased by heparan sulfate glycosaminoglycans that function as coreceptors. Likewise, KLB increases the affinity for FGF19 and FGF21. Interacts with PIK3R1, PLCG1, SOCS1 and SOCS3. Isoform 3 forms disulfide-linked dimers.


The second and third Ig-like domains directly interact with fibroblast growth factors (FGF) and heparan sulfate proteoglycans.

Belongs to the protein kinase superfamily. Tyr protein kinase family. Fibroblast growth factor receptor subfamily.

Research Fields

· Cellular Processes > Transport and catabolism > Endocytosis.   (View pathway)

· Cellular Processes > Cellular community - eukaryotes > Signaling pathways regulating pluripotency of stem cells.   (View pathway)

· Cellular Processes > Cell motility > Regulation of actin cytoskeleton.   (View pathway)

· Environmental Information Processing > Signal transduction > MAPK signaling pathway.   (View pathway)

· Environmental Information Processing > Signal transduction > Ras signaling pathway.   (View pathway)

· Environmental Information Processing > Signal transduction > Rap1 signaling pathway.   (View pathway)

· Environmental Information Processing > Signal transduction > PI3K-Akt signaling pathway.   (View pathway)

· Human Diseases > Drug resistance: Antineoplastic > EGFR tyrosine kinase inhibitor resistance.

· Human Diseases > Cancers: Overview > Pathways in cancer.   (View pathway)

· Human Diseases > Cancers: Overview > MicroRNAs in cancer.

· Human Diseases > Cancers: Specific types > Bladder cancer.   (View pathway)

· Human Diseases > Cancers: Overview > Central carbon metabolism in cancer.   (View pathway)


1). Zhang N et al. Liraglutide regulates lipid metabolism via FGF21-LKB1-AMPK-ACC1 pathway in white adipose tissues and macrophage of type 2 diabetic mice. BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS 2021 Feb 25;548:120-126. (PubMed: 33640604) [IF=3.1]

Application: WB    Species: mice    Sample: RAW264.7 cells

Fig. 3. Effects of LRG on the gene expression in PA-treated LPS-induced RAW264.7 cells. (A) Effects of LRG on secretion of FGF21 in culture supernatant; (B) Effects of LRG on mRNA expression of FGF21; (C) Effects of LRG on mRNA expression of ACC1; (D) Effects of LRG on the protein expression of FGF21, p-FGFR2 and p-FGFR3; (E) Quantification of Fig. 3D; (F) Effect of LRG on protein expression of AMPK pathway; (G) Quantification of Fig. 3F. #p < 0.05, ##p < 0.01 vs CON; $p < 0.05, $$p < 0.01 vs LPS þ HGHP; &p < 0.05, &&p < 0.01 vs PA þ LPS þ LRG (L); *p < 0.05, **p < 0.01 vs PA þ LPS þ LRG (M).

2). Xie H et al. The Effect of Wnt Family Member 5a Gene Silencing on the Proliferation of Achondroplasia Using a DNAzymes-CoOOH Nanocomposite. Journal of Biomedical Nanotechnology 2021 Jul 1;17(7):1426-1434. (PubMed: 34446145) [IF=2.9]

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