Monomer. Homodimer after ligand binding. Interacts predominantly with FGF1 and FGF2, but can also interact with FGF3, FGF4, FGF5, FGF6, FGF8, FGF10, FGF19, FGF21, FGF22 and FGF23 (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, FGF21 and FGF23. Interacts (phosphorylated on Tyr-766) with PLCG1 (via SH2 domains). Interacts with FRS2A. Interacts (via C-terminus) with NEDD4 (via WW3 domain). Interacts with KL (By similarity). Interacts with SHB (via SH2 domain) and GRB10. Interacts with KAL1; this interaction does not interfere with FGF2-binding to FGFR1, but prevents binding of heparin-bound FGF2. Interacts with SOX2 and SOX3.
Function:
Tyrosine-protein kinase that acts as cell-surface receptor for fibroblast growth factors and plays an essential role in the regulation of embryonic development, cell proliferation, differentiation and migration. Required for normal mesoderm patterning and correct axial organization during embryonic development, normal skeletogenesis and normal development of the gonadotropin-releasing hormone (GnRH) neuronal system. Phosphorylates PLCG1, FRS2A, GAB1 and SHB. 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 FRS2A 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. Promotes phosphorylation of SHC1, STAT1 and PTPN11/SHP2. In the nucleus, enhances RPS6KA1 and CREB1 activity and contributes to the regulation of transcription. FGFR1 signaling is down-regulated by IL17RD/SEF, and by FGFR1 ubiquitination, internalization and degradation.
Subcellular Location:
Cell membrane
Single-pass type I membrane protein
Nucleus
Cytoplasm
cytosol
Cytoplasmic vesicle
After ligand binding, both receptor and ligand are rapidly internalized. Can translocate to the nucleus after internalization, or by translocation from the endoplasmic reticulum or Golgi apparatus to the cytosol, and from there to the nucleus.
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1);INTERACTION WITH FGF1 AND FGF2
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 6; 15; 17 AND 18)
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 14);INTERACTION WITH FGF1 AND FGF2
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1; 6; 14; 15 AND 16)
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 19);ROLE IN DISEASE
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 6; 14 AND 21)
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 14 AND 20)
NIEHS SNPs program
Submitted (2004-03) to the EMBL/GenBank/DDBJ databases
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Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA];VARIANTS SER-22; ARG-818 AND CYS-822
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 4; 14 AND 15);VARIANT GLY-213
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 1-370 (ISOFORM 15);PROTEIN SEQUENCE OF 22-129 (ISOFORM 15)
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Cited for: PROTEIN SEQUENCE OF 81-100 (ISOFORMS 1/2/4/5/14/16)
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 201-822 (ISOFORMS 1/6/10/14/15)
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Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 313-391 (ISOFORMS 17/18);NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 313-360 (ISOFORMS 1/2/4/5/6/7/8/9/10/11/12/13/14/15);NUCLEOTIDE SEQUENCE [GENOMIC DNA / MRNA] OF 313-360 (ISOFORM 19);TISSUE SPECIFICITY
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Cited for: MUTAGENESIS OF TYR-766;FUNCTION;CATALYTIC ACTIVITY;AUTOPHOSPHORYLATION;INTERACTION WITH PLCG1
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Cited for: MUTAGENESIS OF TYR-766;FUNCTION IN CELL PROLIFERATION
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Cited for: PHOSPHORYLATION AT TYR-463; TYR-583; TYR-585; TYR-653; TYR-654 AND TYR-730;CATALYTIC ACTIVITY;ENZYME REGULATION;FUNCTION IN PHOSPHORYLATION OF PLCG1 AND SHC1; ACTIVATION OF MAP KINASES AND REGULATION OF CELL PROLIFERATION AND DIFFERENTIATION;MUTAGENESIS OF TYR-653 AND TYR-654
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Cited for: INTERACTION WITH FGF1; FGF2; FGF4; FGF5; FGF6;FUNCTION IN CELL PROLIFERATION
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Cited for: FUNCTION IN PHOSPHORYLATION OF FRS2 AND GAB1 AND IN ACTIVATION OF PIK3R1
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Cited for: FUNCTION IN ACTIVATION OF SIGNALING VIA RAS AND MAP KINASES AND CELL PROLIFERATION;FUNCTION IN PHOSPHORYLATION OF FRS2; SHB AND PTPN11/SHP2;INTERACTION WITH SHB AND FGF2;MUTAGENESIS OF TYR-766
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Cited for: FUNCTION IN ACTIVATION OF RPS6KA1 AND CREB1;CATALYTIC ACTIVITY;INTERACTION WITH RPS6KA1;MUTAGENESIS OF LYS-514;SUBCELLULAR LOCATION
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Cited for: GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-296
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Cited for: INTERACTION WITH FGF1; FGF8; FGF10; FGF19; FGF21; FGF22 AND FGF23;FUNCTION IN STIMULATION OF CELL PROLIFERATION
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Cited for: PHOSPHORYLATION AT TYR-463; TYR-653; TYR-654; TYR-583 AND TYR-585;IDENTIFICATION BY MASS SPECTROMETRY
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Cited for: INTERACTION WITH FGF19; FGF21 AND KLB;FUNCTION IN REGULATION OF GLUCOSE UPTAKE IN ADIPOCYTES
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Cited for: FUNCTION IN STAT1 PHOSPHORYLATION;GLYCOSYLATION;PHOSPHORYLATION
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Cited for: UBIQUITINATION;CATALYTIC ACTIVITY;FUNCTION AS FGF1 RECEPTOR AND IN ACTIVATION OF PLCG1; FRS2; MAPK1/ERK2 AND MAPK3/ERK1;ENZYME REGULATION;SUBCELLULAR LOCATION
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Cited for: FUNCTION IN CHROMATIN BINDING AND TRANSCRIPTION REGULATION;SUBCELLULAR LOCATION
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Cited for: FUNCTION AS PROTO-ONCOGENE;ACTIVE SITE;MUTAGENESIS OF ASN-546 AND ASP-623;CATALYTIC ACTIVITY;PHOSPHORYLATION AT TYR-463; TYR-653; TYR-654; TYR-583; TYR-585 AND TYR-730;IDENTIFICATION BY MASS SPECTROMETRY;ENZYME REGULATION
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Cited for: FUNCTION IN ACTIVATION OF AKT1; PLCG1; MAPK1/ERK2;MAPK3/ERK1 AND MAP KINASE SIGNALING;FUNCTION IN REGULATION OF NEURONAL DIFFERENTIATION AND EMBRYONIC DEVELOPMENT;SUBCELLULAR LOCATION;INTERACTION WITH NEDD4; PLCG1 AND FRS2;UBIQUITINATION;DEGRADATION
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Cited for: REVIEW ON ALTERNATIVE SPLICE FORMS; LIGANDS; SIGNALING PATHWAYS AND SUBCELLULAR LOCATION
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Cited for: REVIEW ON FUNCTION; ROLE IN DISEASE; SIGNALING PATHWAYS; SUBUNIT; DOMAIN STRUCTURE; LIGAND SELECTIVITY AND ENZYME REGULATION
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Cited for: REVIEW ON SIGNALING AND ROLE IN KALLMAN SYNDROME
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Cited for: X-RAY CRYSTALLOGRAPHY (2.0 ANGSTROMS) OF 464-762
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Cited for: X-RAY CRYSTALLOGRAPHY (2.4 ANGSTROMS) OF 464-762 IN COMPLEX WITH SU4984
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Cited for: X-RAY CRYSTALLOGRAPHY (2.8 ANGSTROMS) OF 141-365 IN COMPLEX WITH FGF1;FUNCTION;DISULFIDE BONDS
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Cited for: X-RAY CRYSTALLOGRAPHY (3.0 ANGSTROMS) OF 143-364 IN COMPLEX WITH FGF2 AND HEPARIN;DISULFIDE BONDS
57.
"Solution structure of the first Ig-like domain of human fibroblast growth factor receptor 1." RIKEN structural genomics initiative (RSGI)
Submitted (2005-11) to the PDB data bank
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Cited for: STRUCTURE BY NMR OF 38-124
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Cited for: X-RAY CRYSTALLOGRAPHY (2.5 ANGSTROMS) OF 458-774 IN COMPLEX WITH PLCG1 AND ATP ANALOG;FUNCTION;CATALYTIC ACTIVITY;SUBUNIT;AUTOPHOSPHORYLATION;PHOSPHORYLATION AT TYR-653; TYR-654 AND TYR-766
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Cited for: X-RAY CRYSTALLOGRAPHY (2.7 ANGSTROMS) OF 458-765 OF MUTANT GLU-577;FUNCTION;CATALYTIC ACTIVITY;SUBUNIT;MUTAGENESIS OF ARG-577
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Cited for: X-RAY CRYSTALLOGRAPHY (2.01 ANGSTROMS) OF 461-765 IN COMPLEX WITH ARQ 069;ENZYME REGULATION
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Cited for: VARIANTS HH2 ASP-97; CYS-99; SER-167; TYR-277; MET-607; ARG-666; ARG-719 AND SER-772
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Cited for: VARIANTS OGD ILE-330; CYS-374 AND ARG-381;CHARACTERIZATION OF VARIANT OGD CYS-374
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Cited for: VARIANTS HH2 ILE-102; ALA-129; MET-273 AND THR-520
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Cited for: VARIANTS HH2 SER-48; PRO-245; TRP-250; VAL-343; LEU-366; SER-722 AND ILE-795
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Cited for: VARIANTS HH2 CYS-78; ILE-102; HIS-224; ASP-237; GLN-254; MET-273; GLY-274 CYS-339; CYS-346; VAL-538; ARG-703 AND SER-703;VARIANT VAL-769
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Cited for: VARIANTS HH2 SER-237; HIS-722 AND LYS-724;CHARACTERIZATION OF VARIANTS HH2 SER-237; HIS-722 AND LYS-724
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Cited for: VARIANTS HH2 PHE-101; TRP-250; ASP-270; ARG-283; CYS-332; ARG-621; PHE-685; PHE-693 AND SER-772;VARIANTS LYS-77 AND CYS-822
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Cited for: VARIANTS [LARGE SCALE ANALYSIS] LEU-125; THR-252 AND LEU-664
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Cited for: VARIANTS HH2 CYS-99; SER-117; ASP-228; THR-239; GLN-250; LEU-470; ASN-618 AND PRO-671;CHARACTERIZATION OF VARIANTS HH2 CYS-99; SER-117; ASP-228; THR-239; GLN-250; LEU-470; ASN-618 AND PRO-671
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Cited for: VARIANTS HH2 SER-117; ASP-228; THR-239; GLN-250; SER-342; ARG-348; LEU-470; THR-483; ASN-618; LYS-670; GLY-692; HIS-722; LYS-724 AND TYR-768
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Cited for: INVOLVEMENT IN HRTFDS;VARIANTS HRTFDS SER-165; SER-191; ARG-490; TYR-623; LYS-628 AND TYR-725