ID A0A7F8RWX8_LEPWE Unreviewed; 768 AA.
AC A0A7F8RWX8;
DT 10-FEB-2021, integrated into UniProtKB/TrEMBL.
DT 10-FEB-2021, sequence version 1.
DT 28-JAN-2026, entry version 25.
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};
GN Name=KIT {ECO:0000313|RefSeq:XP_030897761.1};
OS Leptonychotes weddellii (Weddell seal) (Otaria weddellii).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Laurasiatheria; Carnivora; Caniformia; Pinnipedia; Phocidae;
OC Monachinae; Lobodontini; Leptonychotes.
OX NCBI_TaxID=9713 {ECO:0000313|Proteomes:UP000245341, ECO:0000313|RefSeq:XP_030897761.1};
RN [1] {ECO:0000313|RefSeq:XP_030897761.1}
RP IDENTIFICATION.
RC TISSUE=Liver {ECO:0000313|RefSeq:XP_030897761.1};
RG RefSeq;
RL Submitted (AUG-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 RefSeq; XP_030897761.1; XM_031041901.1.
DR AlphaFoldDB; A0A7F8RWX8; -.
DR GeneID; 102726034; -.
DR KEGG; lww:102726034; -.
DR CTD; 3815; -.
DR OrthoDB; 6077854at2759; -.
DR Proteomes; UP000245341; Unplaced.
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:0048513; P:animal organ development; IEA:UniProtKB-ARBA.
DR GO; GO:0030183; P:B cell differentiation; IEA:TreeGrafter.
DR GO; GO:0008283; P:cell population proliferation; IEA:UniProtKB-ARBA.
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: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 GO; GO:0042127; P:regulation of cell population proliferation; IEA:UniProtKB-ARBA.
DR GO; GO:0050793; P:regulation of developmental process; IEA:UniProtKB-ARBA.
DR CDD; cd00096; Ig; 1.
DR CDD; cd05104; PTKc_Kit; 1.
DR FunFam; 1.10.510.10:FF:000177; Mast/stem cell growth factor receptor; 1.
DR FunFam; 2.60.40.10:FF:000422; Mast/stem cell growth factor receptor; 1.
DR FunFam; 2.60.40.10:FF:000544; Mast/stem cell growth factor receptor; 1.
DR FunFam; 2.60.40.10:FF:000815; 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; 3.
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; 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; 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; SM00219; TyrKc; 1.
DR SUPFAM; SSF48726; Immunoglobulin; 1.
DR SUPFAM; SSF56112; Protein kinase-like (PK-like); 1.
DR PROSITE; PS50835; IG_LIKE; 1.
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:PIRSR500951-
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|PIRSR:PIRSR500951-1};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|SAM:Phobius};
KW Metal-binding {ECO:0000256|PIRSR:PIRSR500951-1};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741,
KW ECO:0000256|PIRSR:PIRSR500951-2};
KW Phosphoprotein {ECO:0000256|ARBA:ARBA00022553};
KW Receptor {ECO:0000256|ARBA:ARBA00023170, ECO:0000256|RuleBase:RU000311};
KW Reference proteome {ECO:0000313|Proteomes:UP000245341};
KW Repeat {ECO:0000256|ARBA:ARBA00022737};
KW Signal {ECO:0000256|ARBA:ARBA00022729, ECO:0000256|SAM:SignalP};
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}.
FT SIGNAL 1..25
FT /evidence="ECO:0000256|SAM:SignalP"
FT CHAIN 26..768
FT /note="receptor protein-tyrosine kinase"
FT /evidence="ECO:0000256|SAM:SignalP"
FT /id="PRO_5028939469"
FT TRANSMEM 317..340
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 209..303
FT /note="Ig-like"
FT /evidence="ECO:0000259|PROSITE:PS50835"
FT DOMAIN 381..729
FT /note="Protein kinase"
FT /evidence="ECO:0000259|PROSITE:PS50011"
FT BINDING 360
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|PIRSR:PIRSR500951-1"
FT BINDING 388..395
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR500951-2"
FT BINDING 415
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR500951-2,
FT ECO:0000256|PROSITE-ProRule:PRU10141"
FT BINDING 463..469
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR500951-2"
FT BINDING 588
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR500951-2"
FT BINDING 589
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|PIRSR:PIRSR500951-1"
FT BINDING 602
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|PIRSR:PIRSR500951-1"
FT SITE 728
FT /note="Important for interaction with phosphotyrosine-
FT binding proteins"
FT /evidence="ECO:0000256|PIRSR:PIRSR500951-3"
SQ SEQUENCE 768 AA; 86195 MW; 71E348BFF313EC80 CRC64;
MRGARGAWDF LCVLLILFRV QTGSSQPSVS PGELSLPSIH PAKSELIVSV GDEIRLLCTD
PGFVKWTFET PGQLSENTRN EWITEKAEAA NTGNYTCTNR DGLSRSIYVF VRDPAQLFLI
DLRLYGKEDN DTLVRCPLTD PEVTNYSLRG CEGKPLPKDL TFVTDPKAGI TIRHVKREYH
RLCLHCSADQ KGKSVLSTKF TLKVRAAKPE ILTHESLVNG MLQCVVAGFP EPTVDWYFCP
GTEQRCSIPV GPMDVQMQNS SVSPSGKLVV QSSIDYSAFK HNGTVECRAY NNVGRSSAFF
NFAFKEQIHP HTLFTPLLIG FVIAAGMMCI IVMILTYKYL QKPMYEVQWK VVEEINGNNY
VYIDPTQLPY DHKWEFPRNR LSFGKTLGAG AFGKVVEATA YGLIKSDAAM TVAVKMLKPS
AHLTEREALM SELKVLSYLG NHMNIVNLLG ACTVGGPTLV ITEYCCYGDL LNFLRRKRDS
FICSKQEDHA EVALYKNLLH SKESSCNDSA NEYMDMKPGV SYVVPTKADK RRSARIGSYI
ERDVTPAIME DDELALDLED LLSFSYQVAK GMAFLASKNC IHRDLAARNI LLTHGRITKI
CDFGLARDIK NDSNYVVKGN ARLPVKWMAP ESIFNCVYTF ESDVWSYGIF LWELFSLGSS
PYPGMPVDSK FYKMIKEGFR MLSPEHAPAE MYDIMKTCWD ADPLKRPTFK QIVQLIEKQI
SDSTNHIYSN LVNCSPHQER PVVDHSVRIN SVGSSASSTQ PLLVHEDV
//
