| Post Translational Modifications | 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. N-glycosylated in the endoplasmic reticulum. The N-glycan chains undergo further maturation to an Endo H-resistant form in the Golgi apparatus. Ubiquitinated. FGFR2 is rapidly ubiquitinated after autophosphorylation, leading to internalization and degradation. Subject to degradation both in lysosomes and by the proteasome. |
| Function | Tyrosine-protein kinase that acts as a 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. Required for normal embryonic patterning, trophoblast function, limb bud development, lung morphogenesis, osteogenesis and skin development. Plays an essential role in the regulation of osteoblast differentiation, proliferation and apoptosis, and is required for normal skeleton development. Promotes cell proliferation in keratinocytes and immature osteoblasts, but promotes apoptosis in differentiated osteoblasts. Phosphorylates PLCG1, FRS2 and PAK4. 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. 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. |
| Protein Name | Fibroblast Growth Factor Receptor 2Fgfr-2Keratinocyte Growth Factor ReceptorKgfrCd Antigen Cd332 |
| Database Links | Reactome: R-MMU-109704Reactome: -MMU-1257604Reactome: -MMU-190375Reactome: -MMU-190377Reactome: -MMU-5654221Reactome: -MMU-5654695Reactome: -MMU-5654699Reactome: -MMU-5654700Reactome: -MMU-5654727Reactome: -MMU-5673001Reactome: -MMU-6811558 |
| Cellular Localisation | Cell MembraneSingle-Pass Type I Membrane ProteinGolgi ApparatusCytoplasmic VesicleDetected On Osteoblast Plasma Membrane Lipid RaftsAfter Ligand BindingThe Activated Receptor Is Rapidly Internalized And Degraded |
| Alternative Protein Names | Fibroblast Growth Factor Receptor 2 proteinFgfr-2 proteinKeratinocyte Growth Factor Receptor proteinKgfr proteinCd Antigen Cd332 proteinFgfr2 proteinBek proteinEct1 protein |
Information sourced from Uniprot.org
