P21803 (FGFR2_MOUSE) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 139.
History...
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Fibroblast growth factor receptor 2 Short name=FGFR-2 EC=2.7.10.1 Alternative name(s): Keratinocyte growth factor receptor Short name=KGFR CD_antigen=CD332 | ||||
| Gene names |
| ||||
| Organism | Mus musculus (Mouse) [Reference proteome] | ||||
| Taxonomic identifier | 10090 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Mus › Mus![]() |
Protein attributes
| Sequence length | 821 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is further processed into a mature form. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| 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, 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. Ref.6 Ref.7 Ref.11 Ref.13 |
| Catalytic activity | ATP + a [protein]-L-tyrosine = ADP + a [protein]-L-tyrosine phosphate. |
| Enzyme regulation | Present in an inactive conformation in the absence of bound ligand. Ligand binding leads to dimerization and activation by autophosphorylation on tyrosine residues By similarity. |
| Subunit structure | Monomer. Homodimer after ligand binding. Interacts predominantly with FGF1 and FGF2, but can also interact with FGF3, FGF4, FGF6, FGF7, FGF8, FGF9, FGF10, FGF17, FGF18 and FGF22 (in vitro). Ligand specificity is determined by tissue-specific expression of isoforms, and differences in the third Ig-like domain are crucial for ligand specificity. 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 PLCG1, GRB2 and PAK4 By similarity. Ref.7 Ref.13 |
| Subcellular location | Cell membrane; Single-pass type I membrane protein. Golgi apparatus By similarity. Cytoplasmic vesicle By similarity. Note: Detected on osteoblast plasma membrane lipid rafts. After ligand binding, the activated receptor is rapidly internalized and degraded By similarity. |
| Domain | The second and third Ig-like domains directly interact with fibroblast growth factors (FGF) and heparan sulfate proteoglycans. Alternative splicing events affecting the third Ig-like domain are crucial for ligand selectivity By similarity. |
| Post-translational modification | 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 By similarity. Ref.13 N-glycosylated in the endoplasmic reticulum. The N-glycan chains undergo further maturation to an Endo H-resistant form in the Golgi apparatus By similarity. Ubiquitinated. FGFR2 is rapidly ubiquitinated after autophosphorylation, leading to internalization and degradation. Subject to degradation both in lysosomes and by the proteasome By similarity. |
| Disruption phenotype | Embryonic lethality shortly after implantation, due to trophoblast defects, absence of a functional placenta, failure of limb bud formation, plus defects in lung branching and heart development. Ref.8 Ref.9 Ref.10 Ref.12 |
| Sequence similarities | Belongs to the protein kinase superfamily. Tyr protein kinase family. Fibroblast growth factor receptor subfamily. Contains 3 Ig-like C2-type (immunoglobulin-like) domains. Contains 1 protein kinase domain. |
Ontologies
Alternative products
| This entry describes 2 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform Long (identifier: P21803-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform Short (identifier: P21803-2) The sequence of this isoform differs from the canonical sequence as follows: 37-37: E → G 38-152: Missing. 314-361: AAGVNTTDKE...FHSAWLTVLP → HSGINSSNAE...AWLTVLPKQQ |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||||||||||||||||||||
Molecule processing | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Signal peptide | 1 – 21 | 21 | |||||||||||||||||||||||||
| Chain | 22 – 821 | 800 | Fibroblast growth factor receptor 2 | PRO_0000016784 | |||||||||||||||||||||||
Regions | |||||||||||||||||||||||||||
| Topological domain | 22 – 377 | 356 | Extracellular Potential | ||||||||||||||||||||||||
| Transmembrane | 378 – 398 | 21 | Helical; Potential | ||||||||||||||||||||||||
| Topological domain | 399 – 821 | 423 | Cytoplasmic Potential | ||||||||||||||||||||||||
| Domain | 25 – 125 | 101 | Ig-like C2-type 1 | ||||||||||||||||||||||||
| Domain | 154 – 247 | 94 | Ig-like C2-type 2 | ||||||||||||||||||||||||
| Domain | 256 – 358 | 103 | Ig-like C2-type 3 | ||||||||||||||||||||||||
| Domain | 481 – 770 | 290 | Protein kinase | ||||||||||||||||||||||||
| Nucleotide binding | 487 – 495 | 9 | ATP By similarity | ||||||||||||||||||||||||
| Nucleotide binding | 565 – 567 | 3 | ATP By similarity | ||||||||||||||||||||||||
| Region | 161 – 178 | 18 | Heparin-binding By similarity | ||||||||||||||||||||||||
Sites | |||||||||||||||||||||||||||
| Active site | 626 | 1 | Proton acceptor By similarity | ||||||||||||||||||||||||
| Binding site | 517 | 1 | ATP By similarity | ||||||||||||||||||||||||
| Binding site | 571 | 1 | ATP By similarity | ||||||||||||||||||||||||
Amino acid modifications | |||||||||||||||||||||||||||
| Modified residue | 466 | 1 | Phosphotyrosine; by autocatalysis By similarity | ||||||||||||||||||||||||
| Modified residue | 586 | 1 | Phosphotyrosine; by autocatalysis By similarity | ||||||||||||||||||||||||
| Modified residue | 588 | 1 | Phosphotyrosine; by autocatalysis By similarity | ||||||||||||||||||||||||
| Modified residue | 656 | 1 | Phosphotyrosine; by autocatalysis By similarity | ||||||||||||||||||||||||
| Modified residue | 657 | 1 | Phosphotyrosine; by autocatalysis By similarity | ||||||||||||||||||||||||
| Modified residue | 769 | 1 | Phosphotyrosine; by autocatalysis By similarity | ||||||||||||||||||||||||
| Glycosylation | 83 | 1 | N-linked (GlcNAc...) Potential | ||||||||||||||||||||||||
| Glycosylation | 123 | 1 | N-linked (GlcNAc...) Potential | ||||||||||||||||||||||||
| Glycosylation | 147 | 1 | N-linked (GlcNAc...) Potential | ||||||||||||||||||||||||
| Glycosylation | 228 | 1 | N-linked (GlcNAc...) Potential | ||||||||||||||||||||||||
| Glycosylation | 241 | 1 | N-linked (GlcNAc...) Potential | ||||||||||||||||||||||||
| Glycosylation | 265 | 1 | N-linked (GlcNAc...) Potential | ||||||||||||||||||||||||
| Glycosylation | 297 | 1 | N-linked (GlcNAc...) Potential | ||||||||||||||||||||||||
| Glycosylation | 318 | 1 | N-linked (GlcNAc...) Potential | ||||||||||||||||||||||||
| Glycosylation | 331 | 1 | N-linked (GlcNAc...) Potential | ||||||||||||||||||||||||
| Disulfide bond | 62 ↔ 107 | By similarity | |||||||||||||||||||||||||
| Disulfide bond | 179 ↔ 231 | By similarity | |||||||||||||||||||||||||
| Disulfide bond | 278 ↔ 342 | By similarity | |||||||||||||||||||||||||
Natural variations | |||||||||||||||||||||||||||
| Alternative sequence | 37 | 1 | E → G in isoform Short. | VSP_002985 | |||||||||||||||||||||||
| Alternative sequence | 38 – 152 | 115 | Missing in isoform Short. | VSP_002986 | |||||||||||||||||||||||
| Alternative sequence | 314 – 361 | 48 | AAGVN…LTVLP → HSGINSSNAEVLALFNVTEM DAGEYICKVSNYIGQANQSA WLTVLPKQQ in isoform Short. | VSP_002987 | |||||||||||||||||||||||
Experimental info | |||||||||||||||||||||||||||
| Mutagenesis | 769 | 1 | Y → F: Abolishes phosphorylation of FRS2 and activation of MAP kinases. Ref.13 | ||||||||||||||||||||||||
| Sequence conflict | 53 | 1 | A → V in CAA39083. Ref.1 | ||||||||||||||||||||||||
| Sequence conflict | 55 – 56 | 2 | GE → RG in CAA39083. Ref.1 | ||||||||||||||||||||||||
| Sequence conflict | 90 | 1 | E → R in CAA39083. Ref.1 | ||||||||||||||||||||||||
| Sequence conflict | 119 | 1 | I → Y in CAA39083. Ref.1 | ||||||||||||||||||||||||
| Sequence conflict | 142 – 143 | 2 | DV → R in CAA39083. Ref.1 | ||||||||||||||||||||||||
| Sequence conflict | 169 | 1 | C → V in CAA39083. Ref.1 | ||||||||||||||||||||||||
| Sequence conflict | 169 | 1 | C → V in AAA39377. Ref.2 | ||||||||||||||||||||||||
| Sequence conflict | 187 | 1 | S → P in CAA39083. Ref.1 | ||||||||||||||||||||||||
| Sequence conflict | 187 | 1 | S → P in AAA39377. Ref.2 | ||||||||||||||||||||||||
| Sequence conflict | 214 | 1 | W → R in CAA39083. Ref.1 | ||||||||||||||||||||||||
| Sequence conflict | 229 | 1 | Y → I in CAA39083. Ref.1 | ||||||||||||||||||||||||
| Sequence conflict | 275 | 1 | E → R in CAA39083. Ref.1 | ||||||||||||||||||||||||
| Sequence conflict | 301 | 1 | N → Y in CAA39083. Ref.1 | ||||||||||||||||||||||||
| Sequence conflict | 301 | 1 | N → Y in AAA39377. Ref.2 | ||||||||||||||||||||||||
Secondary structure | |||||||||||||||||||||||||||
Helix Strand Turn | |||||||||||||||||||||||||||
| Beta strand | 48 – 52 | 5 | |||||||||||||||||||||||||
| Beta strand | 58 – 61 | 4 | |||||||||||||||||||||||||
| Beta strand | 69 – 74 | 6 | |||||||||||||||||||||||||
| Beta strand | 77 – 79 | 3 | |||||||||||||||||||||||||
| Beta strand | 83 – 88 | 6 | |||||||||||||||||||||||||
| Beta strand | 91 – 94 | 4 | |||||||||||||||||||||||||
| Helix | 99 – 101 | 3 | |||||||||||||||||||||||||
| Beta strand | 103 – 110 | 8 | |||||||||||||||||||||||||
| Beta strand | 115 – 124 | 10 | |||||||||||||||||||||||||
Sequences
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References
| [1] | "PCR-based identification of new receptors: molecular cloning of a receptor for fibroblast growth factors." Raz V., Kelman Z., Avivi A., Neufeld G., Givol D., Yarden Y. Oncogene 6:753-760(1991) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM LONG). Strain: BALB/c. Tissue: Brain. |
| [2] | "Expression cDNA cloning of the KGF receptor by creation of a transforming autocrine loop." Miki T., Fleming T.P., Bottaro D.P., Rubin J.S., Ron D., Aaronson S.A. Science 251:72-75(1991) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM SHORT). |
| [3] | "Characterization of the murine BEK fibroblast growth factor (FGF) receptor: activation by three members of the FGF family and requirement for heparin." Mansukhani A., Dell'Era P., Moscatelli D., Kornbluth S., Hanafusa H., Basilico C. Proc. Natl. Acad. Sci. U.S.A. 89:3305-3309(1992) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM LONG). Tissue: Brain and Liver. |
| [4] | "Conserved use of a non-canonical 5' splice site (/GA) in alternative splicing by fibroblast growth factor receptors 1, 2 and 3." Twigg S.R.F., Burns H.D., Oldridge M., Heath J.K., Wilkie A.O.M. Hum. Mol. Genet. 7:685-691(1998) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORM LONG). |
| [5] | "Novel tyrosine kinase identified by phosphotyrosine antibody screening of cDNA libraries." Kornbluth S., Paulson K.E., Hanafusa H. Mol. Cell. Biol. 8:5541-5544(1988) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 477-821. Tissue: Liver. |
| [6] | "Developmental localization of the splicing alternatives of fibroblast growth factor receptor-2 (FGFR2)." Orr-Urtreger A., Bedford M.T., Burakova T., Arman E., Zimmer Y., Yayon A., Givol D., Lonai P. Dev. Biol. 158:475-486(1993) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [7] | "Receptor specificity of the fibroblast growth factor family." Ornitz D.M., Xu J., Colvin J.S., McEwen D.G., MacArthur C.A., Coulier F., Gao G., Goldfarb M. J. Biol. Chem. 271:15292-15297(1996) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH FGF1; FGF2; FGF3; FGF4; FGF6; FGF7 AND FGF9, FUNCTION IN CELL PROLIFERATION. |
| [8] | "Fibroblast growth factor receptor 2 (FGFR2)-mediated reciprocal regulation loop between FGF8 and FGF10 is essential for limb induction." Xu X., Weinstein M., Li C., Naski M., Cohen R.I., Ornitz D.M., Leder P., Deng C. Development 125:753-765(1998) [PubMed] [Europe PMC] [Abstract] Cited for: DISRUPTION PHENOTYPE. |
| [9] | "Targeted disruption of fibroblast growth factor (FGF) receptor 2 suggests a role for FGF signaling in pregastrulation mammalian development." Arman E., Haffner-Krausz R., Chen Y., Heath J.K., Lonai P. Proc. Natl. Acad. Sci. U.S.A. 95:5082-5087(1998) [PubMed] [Europe PMC] [Abstract] Cited for: DISRUPTION PHENOTYPE. |
| [10] | "Fgfr2 is required for limb outgrowth and lung-branching morphogenesis." Arman E., Haffner-Krausz R., Gorivodsky M., Lonai P. Proc. Natl. Acad. Sci. U.S.A. 96:11895-11899(1999) [PubMed] [Europe PMC] [Abstract] Cited for: DISRUPTION PHENOTYPE. |
| [11] | "Signaling by fibroblast growth factors (FGF) and fibroblast growth factor receptor 2 (FGFR2)-activating mutations blocks mineralization and induces apoptosis in osteoblasts." Mansukhani A., Bellosta P., Sahni M., Basilico C. J. Cell Biol. 149:1297-1308(2000) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [12] | "The IIIc alternative of Fgfr2 is a positive regulator of bone formation." Eswarakumar V.P., Monsonego-Ornan E., Pines M., Antonopoulou I., Morriss-Kay G.M., Lonai P. Development 129:3783-3793(2002) [PubMed] [Europe PMC] [Abstract] Cited for: DISRUPTION PHENOTYPE. |
| [13] | "Tyrosine 769 of the keratinocyte growth factor receptor is required for receptor signaling but not endocytosis." Ceridono M., Belleudi F., Ceccarelli S., Torrisi M.R. Biochem. Biophys. Res. Commun. 327:523-532(2005) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION IN CELL PROLIFERATION AND ACTIVATION OF SIGNALING PATHWAYS, MUTAGENESIS OF TYR-769, PHOSPHORYLATION AT TYR-769, INTERACTION WITH PLCG1. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EMBL GenBank DDBJ | X55441 mRNA. Translation: CAA39083.1. M63503 mRNA. Translation: AAA39377.1. M86441 mRNA. Translation: AAA37286.1. Y16152 Genomic DNA. Translation: CAA76098.1. Y16167 Genomic DNA. Translation: CAA76099.1. M23362 mRNA. Translation: AAA37285.1. | ||||||||||||
| IPI | IPI00128462. IPI00989007. | ||||||||||||
| PIR | A38429. TVMSBK. A44142. S17295. | ||||||||||||
| RefSeq | NP_034337.2. NM_010207.2. NP_963895.2. NM_201601.2. | ||||||||||||
| UniGene | Mm.16340. | ||||||||||||
3D structure databases | |||||||||||||
| PDBe RCSB PDB PDBj |
| ||||||||||||
| ProteinModelPortal | P21803. | ||||||||||||
| SMR | P21803. Positions 47-363, 467-806. | ||||||||||||
| ModBase | Search... | ||||||||||||
Protein-protein interaction databases | |||||||||||||
| DIP | DIP-6038N. | ||||||||||||
| IntAct | P21803. 1 interaction. | ||||||||||||
PTM databases | |||||||||||||
| PhosphoSite | P21803. | ||||||||||||
Proteomic databases | |||||||||||||
| PaxDb | P21803. | ||||||||||||
| PRIDE | P21803. | ||||||||||||
Protocols and materials databases | |||||||||||||
| StructuralBiologyKnowledgebase | Search... | ||||||||||||
Genome annotation databases | |||||||||||||
| GeneID | 14183. | ||||||||||||
| KEGG | mmu:14183. | ||||||||||||
Organism-specific databases | |||||||||||||
| CTD | 2263. | ||||||||||||
| MGI | MGI:95523. Fgfr2. | ||||||||||||
Phylogenomic databases | |||||||||||||
| eggNOG | COG0515. | ||||||||||||
| HOGENOM | HOG000263410. | ||||||||||||
| HOVERGEN | HBG000345. | ||||||||||||
| InParanoid | P21803. | ||||||||||||
| KO | K05093. | ||||||||||||
Enzyme and pathway databases | |||||||||||||
| BRENDA | 2.7.10.1. 3474. | ||||||||||||
Gene expression databases | |||||||||||||
| CleanEx | MM_FGFR2. | ||||||||||||
| Genevestigator | P21803. | ||||||||||||
| GermOnline | ENSMUSG00000030849. Mus musculus. | ||||||||||||
Family and domain databases | |||||||||||||
| Gene3D | 2.60.40.10. 3 hits. | ||||||||||||
| InterPro | IPR007110. Ig-like_dom. IPR013783. Ig-like_fold. IPR013098. Ig_I-set. IPR003598. Ig_sub2. IPR011009. Kinase-like_dom. IPR000719. Prot_kinase_cat_dom. IPR017441. Protein_kinase_ATP_BS. IPR001245. Ser-Thr/Tyr_kinase_cat_dom. IPR008266. Tyr_kinase_AS. IPR020635. Tyr_kinase_cat_dom. IPR016248. Tyr_kinase_fibroblast_GF_rcpt. [Graphical view] | ||||||||||||
| Pfam | PF07679. I-set. 3 hits. PF07714. Pkinase_Tyr. 1 hit. [Graphical view] | ||||||||||||
| PIRSF | PIRSF000628. FGFR. 1 hit. | ||||||||||||
| PRINTS | PR00109. TYRKINASE. | ||||||||||||
| SMART | SM00408. IGc2. 3 hits. SM00219. TyrKc. 1 hit. [Graphical view] | ||||||||||||
| SUPFAM | SSF56112. Kinase_like. 1 hit. | ||||||||||||
| PROSITE | PS50835. IG_LIKE. 3 hits. PS00107. PROTEIN_KINASE_ATP. 1 hit. PS50011. PROTEIN_KINASE_DOM. 1 hit. PS00109. PROTEIN_KINASE_TYR. 1 hit. [Graphical view] | ||||||||||||
| ProtoNet | Search... | ||||||||||||
Other | |||||||||||||
| ChEMBL | CHEMBL3648. | ||||||||||||
| ChiTaRS | FGFR2. mouse. | ||||||||||||
| NextBio | 285386. | ||||||||||||
| SOURCE | Search... | ||||||||||||
Entry information
| Entry name | FGFR2_MOUSE | ||||||||
| Accession | Primary (citable) accession number: P21803 Secondary accession number(s): O55141, Q00389, Q61342 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
Relevant documents
| Human and mouse protein kinases Human and mouse protein kinases: classification and index |
| MGD cross-references Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot |
| PDB cross-references Index of Protein Data Bank (PDB) cross-references |
| SIMILARITY comments Index of protein domains and families |

Clusters with
