Descriptions

(Annotation based on sequence homology with P22607)
Fibroblast growth factor receptor 3 (FGFR3) is one of the members of FGFR family belonging to the receptor tyrosine kinases (RTK) in cell proliferation, differentiation, migration, and maintenance of cellular homeostasis. FGFR3 consists of the ligand-binding region (immunoglobulin (Ig) domain 1-like domains) designated D1, D2, and D3, and a kinase domain. The D1 domain and the acid box (AB)-containing linker between D1 and D2 are involved in autoinhibition. Loss of D1 or the linker enhances the affinity of FGFR for FGF and HS and increases the signaling capacity of FGFR. Specifically, the AB region blocks the heparan sulfate (HS)-binding site on the D2 domain in cis to suppress HS-binding affinity of EGFR. D1 is dispensable for autoinhibition but plays a minor role in autoinhibition.

Autoinhibitory domains (AIDs)

Target domain

Relief mechanism

Assay

cis-regPred

Accessory elements

622-647 (Activation loop from InterPro)

Target domain

460-739 (Protein kinase domain)

Relief mechanism

Assay

Autoinhibited structure

Activated structure

1 structures for Q9I8X3

Entry ID Method Resolution Chain Position Source
AF-Q9I8X3-F1 Predicted AlphaFoldDB

No variants for Q9I8X3

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for Q9I8X3

No associated diseases with Q9I8X3

15 regional properties for Q9I8X3

Type Name Position InterPro Accession
domain Protein kinase domain 460 - 739 IPR000719
domain Serine-threonine/tyrosine-protein kinase, catalytic domain 460 - 734 IPR001245
domain Immunoglobulin subtype 2 46 - 108 IPR003598-1
domain Immunoglobulin subtype 2 160 - 228 IPR003598-2
domain Immunoglobulin subtype 2 259 - 339 IPR003598-3
domain Immunoglobulin subtype 40 - 118 IPR003599-1
domain Immunoglobulin subtype 154 - 239 IPR003599-2
domain Immunoglobulin subtype 253 - 350 IPR003599-3
domain Immunoglobulin-like domain 16 - 122 IPR007110-1
domain Immunoglobulin-like domain 144 - 237 IPR007110-2
domain Immunoglobulin-like domain 246 - 348 IPR007110-3
domain Immunoglobulin I-set 37 - 102 IPR013098-1
domain Immunoglobulin I-set 159 - 238 IPR013098-2
domain Immunoglobulin I-set 253 - 349 IPR013098-3
binding_site Protein kinase, ATP binding site 466 - 496 IPR017441

Functions

Description
EC Number 2.7.10.1 Protein-tyrosine kinases
Subcellular Localization
  • Cell membrane ; Single-pass type I membrane protein
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

2 GO annotations of cellular component

Name Definition
integral component of plasma membrane The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
receptor complex Any protein complex that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function.

4 GO annotations of molecular function

Name Definition
ATP binding Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
fibroblast growth factor binding Binding to a fibroblast growth factor.
fibroblast growth factor receptor activity Combining with a fibroblast growth factor receptor ligand and transmitting the signal across the plasma membrane to initiate a change in cell activity.
transmembrane receptor protein tyrosine kinase activity Combining with a signal and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity by catalysis of the reaction: ATP + a protein-L-tyrosine = ADP + a protein-L-tyrosine phosphate.

6 GO annotations of biological process

Name Definition
apoptotic process A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
positive regulation of cell population proliferation Any process that activates or increases the rate or extent of cell proliferation.
positive regulation of kinase activity Any process that activates or increases the frequency, rate or extent of kinase activity, the catalysis of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
positive regulation of MAPK cascade Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the MAPK cascade.
regulation of hematopoietic stem cell differentiation Any process that modulates the frequency, rate or extent of hematopoietic stem cell differentiation.
transmembrane receptor protein tyrosine kinase signaling pathway The series of molecular signals initiated by an extracellular ligand binding to a receptor on the surface of the target cell where the receptor possesses tyrosine kinase activity, and ending with the regulation of a downstream cellular process, e.g. transcription.

28 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
P18460 FGFR3 Fibroblast growth factor receptor 3 Gallus gallus (Chicken) SS
Q07407 htl Fibroblast growth factor receptor homolog 1 Drosophila melanogaster (Fruit fly) PR
P22607 FGFR3 Fibroblast growth factor receptor 3 Homo sapiens (Human) EV
Q61851 Fgfr3 Fibroblast growth factor receptor 3 Mus musculus (Mouse) PR
Q10656 egl-15 Myoblast growth factor receptor egl-15 Caenorhabditis elegans PR
Q8VYA3 WAKL10 Wall-associated receptor kinase-like 10 Arabidopsis thaliana (Mouse-ear cress) PR
Q9C9L5 WAKL9 Wall-associated receptor kinase-like 9 Arabidopsis thaliana (Mouse-ear cress) PR
Q9M092 WAKL17 Wall-associated receptor kinase-like 17 Arabidopsis thaliana (Mouse-ear cress) PR
Q0WNY5 WAKL18 Wall-associated receptor kinase-like 18 Arabidopsis thaliana (Mouse-ear cress) PR
Q9LMN7 WAK5 Wall-associated receptor kinase 5 Arabidopsis thaliana (Mouse-ear cress) PR
Q9LSV3 WAKL16 Putative wall-associated receptor kinase-like 16 Arabidopsis thaliana (Mouse-ear cress) PR
Q9M342 WAKL15 Wall-associated receptor kinase-like 15 Arabidopsis thaliana (Mouse-ear cress) PR
E7F3X9 ddr1 receptor protein-tyrosine kinase Danio rerio (Zebrafish) (Brachydanio rerio) SS
Q5MD89 flt4 Vascular endothelial growth factor receptor 3 Danio rerio (Zebrafish) (Brachydanio rerio) SS
Q8AXB3 kdrl Vascular endothelial growth factor receptor kdr-like Danio rerio (Zebrafish) (Brachydanio rerio) SS
Q5GIT4 kdr Vascular endothelial growth factor receptor 2 Danio rerio (Zebrafish) (Brachydanio rerio) SS
O13146 epha3 Ephrin type-A receptor 3 Danio rerio (Zebrafish) (Brachydanio rerio) SS
O73878 ephb4b Ephrin type-B receptor 4b Danio rerio (Zebrafish) (Brachydanio rerio) SS
O13147 ephb3 Ephrin type-B receptor 3 Danio rerio (Zebrafish) (Brachydanio rerio) SS
F1QVU0 ltk Tyrosine-protein kinase receptor Danio rerio (Zebrafish) (Brachydanio rerio) SS
Q90Z00 fgfr1a Fibroblast growth factor receptor 1-A Danio rerio (Zebrafish) (Brachydanio rerio) SS
Q90413 fgfr4 Fibroblast growth factor receptor 4 Danio rerio (Zebrafish) (Brachydanio rerio) SS
Q9YI66 tyro3 Tyrosine-protein kinase receptor TYRO3 Danio rerio (Zebrafish) (Brachydanio rerio) PR
O73791 tek Angiopoietin-1 receptor Danio rerio (Zebrafish) (Brachydanio rerio) SS
Q8JFR5 kita Mast/stem cell growth factor receptor kita Danio rerio (Zebrafish) (Brachydanio rerio) SS
Q9I8N6 csf1r Macrophage colony-stimulating factor 1 receptor Danio rerio (Zebrafish) (Brachydanio rerio) SS
Q9DE49 pdgfra Platelet-derived growth factor receptor alpha Danio rerio (Zebrafish) (Brachydanio rerio) SS
Q8JG38 fgfr2 Fibroblast growth factor receptor 2 Danio rerio (Zebrafish) (Brachydanio rerio) SS
10 20 30 40 50 60
MVPLCLLLYL ATLVFPPVYS AHLLSPEPTD WVSSEVEVFL EDYVAGVGDT VVLSCTPQDF
70 80 90 100 110 120
LLPIVWQKDG DAVSSSNRTR VGQKALRIIN VSYEDSGVYS CRHAHKSMLL SNYTVKVIDS
130 140 150 160 170 180
LSSGDDEDYD EDEDEAGNGN AEAPYWTRSD RMEKKLLAVP AANTVKFRCP AAGNPTPSIH
190 200 210 220 230 240
WLKNGKEFKG EQRMGGIKLR HQQWSLVMES AVPSDRGNYT CVVQNKYGSI KHTYQLDVLE
250 260 270 280 290 300
RSPHRPILQA GLPANQTVVV GSDVEFHCKV YSDAQPHIQW LKHIEVNGSQ YGPNGAPYVN
310 320 330 340 350 360
VLKTAGINTT DKELEILYLT NVSFEDAGQY TCLAGNSIGY NHHSAWLTVL PAVEMEREDD
370 380 390 400 410 420
YADILIYVTS CVLFILTMVI IILCRMWINT QKTLPAPPVQ KLSKFPLKRQ VSLESNSSMN
430 440 450 460 470 480
SNTPLVRIAR LSSSDGPMLP NVSELELPSD PKWEFTRTKL TLGKPLGEGC FGQVVMAEAI
490 500 510 520 530 540
GIDKEKPNKP LTVAVKMLKD DGTDKDLSDL VSEMEMMKMI GKHKNIINLL GACTQDGPLY
550 560 570 580 590 600
VLVEYASKGN LREYLRARRP PGMDYSFDTC KIPNETLTFK DLVSCAYQVA RGMEYLASKK
610 620 630 640 650 660
CIHRDPAARN VLVTEDNVMK IADFGLARDV HNIDYYKKTT NGRLPVKWMA PEALFDRVYT
670 680 690 700 710 720
HQSDVWSYGV LLWEIFTLGG SPYPGIPVEE LFKLLKEGHR MDKPANCTHE LYMIMRECWH
730 740 750 760 770 780
AVPSQRPTFR QLVEDHDRVL SMTSTDEYLD LSVPFEQYSP TCPDSNSTCS SGDDSVFAHD
790
PLPEEPCLPK HHHSNGVIRT