Rabbit anti-Human FGFR3 Polyclonal Antibody

Uniprot Id

P22607

Target Species

Human

Target Name

FGFR3

Target Full Name

Fibroblast growth factor receptor 3

Target Function

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.

Target Involvement

Achondroplasia (ACH); Crouzon syndrome with acanthosis nigricans (CAN); Thanatophoric dysplasia 1 (TD1); Thanatophoric dysplasia 2 (TD2); Hypochondroplasia (HCH); Bladder cancer (BLC); Cervical cancer (CERCA); Camptodactyly, tall stature, and hearing loss syndrome (CATSHLS); Multiple myeloma (MM); Lacrimo-auriculo-dento-digital syndrome (LADDS); Keratinocytic non-epidermolytic nevus (KNEN); Muenke syndrome (MNKS); Keratosis, seborrheic (KERSEB); Testicular germ cell tumor (TGCT); Achondroplasia, severe, with developmental delay and acanthosis nigricans (SADDAN)

Target Subcellular Location

[Isoform 1]: 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.; [Isoform 2]: Cell membrane; Single-pass type I membrane protein.; [Isoform 3]: Secreted.; [Isoform 4]: Cell membrane; Single-pass type I membrane protein.

Target Protein Families

Protein kinase superfamily, Tyr protein kinase family, Fibroblast growth factor receptor subfamily

Target 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. Isof

Target Research Area

Apoptosis, Cardiovascular

Target Synonyms

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

Target Background

This gene encodes a member of the fibroblast growth factor receptor (FGFR) family, with its amino acid sequence being highly conserved between members and among divergent species. 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 the protein interacts with fibroblast growth factors, setting in motion a cascade of downstream signals, ultimately influencing mitogenesis and differentiation. This particular family member binds acidic and basic fibroblast growth hormone and plays a role in bone development and maintenance. Mutations in this gene lead to craniosynostosis and multiple types of skeletal dysplasia. Three alternatively spliced transcript variants that encode different protein isoforms have been described.