ID A0A6Q2X6L3_ESOLU Unreviewed; 921 AA.
AC A0A6Q2X6L3;
DT 02-DEC-2020, integrated into UniProtKB/TrEMBL.
DT 02-DEC-2020, sequence version 1.
DT 28-JAN-2026, entry version 24.
DE RecName: Full=receptor protein-tyrosine kinase {ECO:0000256|ARBA:ARBA00011902};
DE EC=2.7.10.1 {ECO:0000256|ARBA:ARBA00011902};
DE AltName: Full=Tyrosine-protein kinase Kit {ECO:0000256|ARBA:ARBA00032147};
OS Esox lucius (Northern pike).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Actinopterygii; Neopterygii; Teleostei; Protacanthopterygii; Esociformes;
OC Esocidae; Esox.
OX NCBI_TaxID=8010 {ECO:0000313|Ensembl:ENSELUP00000048857.1, ECO:0000313|Proteomes:UP000265140};
RN [1] {ECO:0000313|Proteomes:UP000265140}
RP NUCLEOTIDE SEQUENCE.
RX PubMed=25069045;
RA Rondeau E.B., Minkley D.R., Leong J.S., Messmer A.M., Jantzen J.R.,
RA von Schalburg K.R., Lemon C., Bird N.H., Koop B.F.;
RT "The genome and linkage map of the northern pike (Esox lucius): conserved
RT synteny revealed between the salmonid sister group and the Neoteleostei.";
RL PLoS ONE 9:e102089-e102089(2014).
RN [2] {ECO:0000313|Ensembl:ENSELUP00000048857.1}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA Myers G., Karagic N., Meyer A., Pippel M., Reichard M., Winkler S.,
RA Tracey A., Sims Y., Howe K., Rhie A., Formenti G., Durbin R., Fedrigo O.,
RA Jarvis E.D.;
RT "Esox lucius (northern pike) genome, fEsoLuc1, primary haplotype.";
RL Submitted (FEB-2020) to the EMBL/GenBank/DDBJ databases.
RN [3] {ECO:0000313|Ensembl:ENSELUP00000048857.1}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (AUG-2025) to UniProtKB.
RN [4] {ECO:0000313|Ensembl:ENSELUP00000048857.1}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (SEP-2025) to UniProtKB.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=L-tyrosyl-[protein] + ATP = O-phospho-L-tyrosyl-[protein] +
CC ADP + H(+); Xref=Rhea:RHEA:10596, Rhea:RHEA-COMP:10136, Rhea:RHEA-
CC COMP:20101, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616, ChEBI:CHEBI:46858,
CC ChEBI:CHEBI:61978, ChEBI:CHEBI:456216; EC=2.7.10.1;
CC Evidence={ECO:0000256|ARBA:ARBA00051243};
CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000256|ARBA:ARBA00004251};
CC Single-pass type I membrane protein {ECO:0000256|ARBA:ARBA00004251}.
CC Membrane {ECO:0000256|RuleBase:RU000311}; Single-pass type I membrane
CC protein {ECO:0000256|RuleBase:RU000311}.
CC -!- SIMILARITY: Belongs to the protein kinase superfamily. Tyr protein
CC kinase family. CSF-1/PDGF receptor subfamily.
CC {ECO:0000256|RuleBase:RU000311}.
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DR AlphaFoldDB; A0A6Q2X6L3; -.
DR Ensembl; ENSELUT00000053766.2; ENSELUP00000048857.1; ENSELUG00000004435.3.
DR GeneTree; ENSGT00940000155626; -.
DR Proteomes; UP000265140; Chromosome 8.
DR Bgee; ENSELUG00000004435; Expressed in camera-type eye and 8 other cell types or tissues.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0043235; C:receptor complex; IEA:TreeGrafter.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0019955; F:cytokine binding; IEA:InterPro.
DR GO; GO:0019838; F:growth factor binding; IEA:TreeGrafter.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0004714; F:transmembrane receptor protein tyrosine kinase activity; IEA:UniProtKB-EC.
DR GO; GO:0030183; P:B cell differentiation; IEA:TreeGrafter.
DR GO; GO:0038093; P:Fc receptor signaling pathway; IEA:InterPro.
DR GO; GO:0002244; P:hematopoietic progenitor cell differentiation; IEA:TreeGrafter.
DR GO; GO:0038109; P:Kit signaling pathway; IEA:InterPro.
DR GO; GO:0030318; P:melanocyte differentiation; IEA:UniProtKB-ARBA.
DR GO; GO:0097324; P:melanocyte migration; IEA:UniProtKB-ARBA.
DR GO; GO:0030335; P:positive regulation of cell migration; IEA:TreeGrafter.
DR GO; GO:0046427; P:positive regulation of receptor signaling pathway via JAK-STAT; IEA:TreeGrafter.
DR CDD; cd00096; Ig; 1.
DR FunFam; 1.10.510.10:FF:000177; Mast/stem cell growth factor receptor; 1.
DR FunFam; 3.30.200.20:FF:000025; Platelet-derived growth factor receptor alpha; 1.
DR Gene3D; 2.60.40.10; Immunoglobulins; 5.
DR Gene3D; 3.30.200.20; Phosphorylase Kinase, domain 1; 1.
DR Gene3D; 1.10.510.10; Transferase(Phosphotransferase) domain 1; 1.
DR InterPro; IPR007110; Ig-like_dom.
DR InterPro; IPR036179; Ig-like_dom_sf.
DR InterPro; IPR013783; Ig-like_fold.
DR InterPro; IPR003599; Ig_sub.
DR InterPro; IPR003598; Ig_sub2.
DR InterPro; IPR011009; Kinase-like_dom_sf.
DR InterPro; IPR000719; Prot_kinase_dom.
DR InterPro; IPR017441; Protein_kinase_ATP_BS.
DR InterPro; IPR050122; RTK.
DR InterPro; IPR027263; SCGF_receptor.
DR InterPro; IPR001245; Ser-Thr/Tyr_kinase_cat_dom.
DR InterPro; IPR008266; Tyr_kinase_AS.
DR InterPro; IPR020635; Tyr_kinase_cat_dom.
DR InterPro; IPR001824; Tyr_kinase_rcpt_3_CS.
DR PANTHER; PTHR24416:SF46; MAST_STEM CELL GROWTH FACTOR RECEPTOR KIT; 1.
DR PANTHER; PTHR24416; TYROSINE-PROTEIN KINASE RECEPTOR; 1.
DR Pfam; PF13927; Ig_3; 2.
DR Pfam; PF25305; Ig_PDGFR_d4; 1.
DR Pfam; PF07714; PK_Tyr_Ser-Thr; 1.
DR PIRSF; PIRSF500951; SCGF_recepter; 1.
DR PIRSF; PIRSF000615; TyrPK_CSF1-R; 1.
DR SMART; SM00409; IG; 4.
DR SMART; SM00408; IGc2; 3.
DR SMART; SM00219; TyrKc; 1.
DR SUPFAM; SSF48726; Immunoglobulin; 4.
DR SUPFAM; SSF56112; Protein kinase-like (PK-like); 1.
DR PROSITE; PS50835; IG_LIKE; 2.
DR PROSITE; PS00107; PROTEIN_KINASE_ATP; 1.
DR PROSITE; PS50011; PROTEIN_KINASE_DOM; 1.
DR PROSITE; PS00109; PROTEIN_KINASE_TYR; 1.
DR PROSITE; PS00240; RECEPTOR_TYR_KIN_III; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|PIRSR:PIRSR000615-
KW 2}; Cell membrane {ECO:0000256|ARBA:ARBA00022475};
KW Disulfide bond {ECO:0000256|ARBA:ARBA00023157};
KW Glycoprotein {ECO:0000256|ARBA:ARBA00023180};
KW Immunoglobulin domain {ECO:0000256|ARBA:ARBA00023319,
KW ECO:0000256|RuleBase:RU000311}; Kinase {ECO:0000256|ARBA:ARBA00022777};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|PIRSR:PIRSR000615-3};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|SAM:Phobius};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723,
KW ECO:0000256|PIRSR:PIRSR000615-3};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741,
KW ECO:0000256|PIRSR:PIRSR000615-2};
KW Phosphoprotein {ECO:0000256|ARBA:ARBA00022553};
KW Receptor {ECO:0000256|ARBA:ARBA00023170, ECO:0000256|RuleBase:RU000311};
KW Reference proteome {ECO:0000313|Proteomes:UP000265140};
KW Repeat {ECO:0000256|ARBA:ARBA00022737};
KW Signal {ECO:0000256|ARBA:ARBA00022729};
KW Transferase {ECO:0000256|ARBA:ARBA00022679};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692,
KW ECO:0000256|RuleBase:RU000311};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989,
KW ECO:0000256|SAM:Phobius};
KW Tyrosine-protein kinase {ECO:0000256|ARBA:ARBA00023137};
KW Ubl conjugation {ECO:0000256|ARBA:ARBA00022843}.
FT TRANSMEM 508..532
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 203..288
FT /note="Ig-like"
FT /evidence="ECO:0000259|PROSITE:PS50835"
FT DOMAIN 304..398
FT /note="Ig-like"
FT /evidence="ECO:0000259|PROSITE:PS50835"
FT DOMAIN 576..892
FT /note="Protein kinase"
FT /evidence="ECO:0000259|PROSITE:PS50011"
FT REGION 895..921
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 902..921
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 756
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-1"
FT BINDING 555
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-3"
FT BINDING 583..590
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-2"
FT BINDING 610
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-2,
FT ECO:0000256|PROSITE-ProRule:PRU10141"
FT BINDING 658..664
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-2"
FT BINDING 760
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-2"
FT BINDING 761
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-3"
FT BINDING 774
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-3"
SQ SEQUENCE 921 AA; 103482 MW; 50BCB81547619AAC CRC64;
VGQPWHSRLL DLHCNDHPHR VTAGRSRPTI TPGNPHLVIP MNSPLSLICK GDRVVRWHRE
DRPKLRGEVR SNGLAELKIP KAMPVHMGRY ICLEESSGQQ NSVYVYVKDP ENAFRKTMVF
SVLARVGDSI AIPCLATDPA MVNLRLEPCH GGALPAGLHY LPSLERGMVI DNTQKAFEGC
YICTGRLDGV LVKSRDYDLT VRPGKNHTIF VLVLTRGQTL TLTCSTTNVN GDIKLKWTSP
PGTVIKTPPP GTPITHVRSS TLTINSVSKQ DSGRYRCEGQ NEKGISFESI WLDVYDRGFI
NLSPADNGTV RVRAGESLSL QVDMEAYPKP HTFTWSFTGQ PLKNTSDHVI TTQAKQQQQQ
HRYTSELRLV RLKMSESGVY TFYSSNGDAS VNQTFSVYVI SKPEIVSHEG PVDGQVRCVA
KGYPAPQITW YYCEQPYIRC SHQMNATQEE QDIVTVTLLS PSFGKTEVES RLNVTTGRFN
TLECVATVDG EQAYTLFSIS ERTVQHELFT PLLIGFVSAA ALLCFILVVL FYKYLQKPKY
QIQWKVIEGI HGNNYVYIDP TQLPYDSQWE FPRDKLRFGK TLGSGAFGKV VEATAYGMSK
ADTVMTVAVK MLKPSAHATE KEALMSELKV LSYLGNHMNI VNLLGACTVG GPTLVITEYC
CFGDLLNFLR RKREMFFCSK LGEDCYYRNV MLQRETATTE TVGNGYMDMR PSVADVVSEM
LHEDGLSLDT EDLLSFSYQV AKGMDFLASK NCIHRDLAAR NILLTQGRVA KICDFGLARD
ITTDSNYVVK GNARLPVKWM SPESIFECVY TFESDVWSYG ILLWEIFSLG SSPYPGMPVD
SKFYKMIKEG YRMDAPDFAP SEMFEIMNSC WDPDPFNRPN FNKVVERIEQ QLSDTTKHVG
HTPQNLQQQL PYSTPIGQCQ R
//
