ID A0A8C8AJ95_9STRI Unreviewed; 1087 AA.
AC A0A8C8AJ95;
DT 19-JAN-2022, integrated into UniProtKB/TrEMBL.
DT 19-JAN-2022, sequence version 1.
DT 28-JAN-2026, entry version 20.
DE RecName: Full=Platelet-derived growth factor receptor alpha {ECO:0000256|ARBA:ARBA00016938, ECO:0000256|PIRNR:PIRNR500950};
DE Short=PDGF-R-alpha {ECO:0000256|PIRNR:PIRNR500950};
DE Short=PDGFR-alpha {ECO:0000256|PIRNR:PIRNR500950};
DE EC=2.7.10.1 {ECO:0000256|ARBA:ARBA00011902, ECO:0000256|PIRNR:PIRNR500950};
DE AltName: Full=Alpha platelet-derived growth factor receptor {ECO:0000256|ARBA:ARBA00030503, ECO:0000256|PIRNR:PIRNR500950};
DE AltName: Full=Alpha-type platelet-derived growth factor receptor {ECO:0000256|ARBA:ARBA00029782, ECO:0000256|PIRNR:PIRNR500950};
OS Otus sunia (Oriental scops-owl).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Archelosauria; Archosauria; Dinosauria; Saurischia; Theropoda;
OC Coelurosauria; Aves; Neognathae; Neoaves; Telluraves; Strigiformes;
OC Strigidae; Otus.
OX NCBI_TaxID=257818 {ECO:0000313|Ensembl:ENSOSUP00000007194.1, ECO:0000313|Proteomes:UP000694552};
RN [1] {ECO:0000313|Ensembl:ENSOSUP00000007194.1}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (AUG-2025) to UniProtKB.
RN [2] {ECO:0000313|Ensembl:ENSOSUP00000007194.1}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (SEP-2025) to UniProtKB.
CC -!- FUNCTION: Tyrosine-protein kinase that acts as a cell-surface receptor
CC for PDGFA, PDGFB and PDGFC and plays an essential role in the
CC regulation of embryonic development, cell proliferation, survival and
CC chemotaxis. Depending on the context, promotes or inhibits cell
CC proliferation and cell migration. Plays an important role in the
CC differentiation of bone marrow-derived mesenchymal stem cells. Required
CC for normal skeleton development. {ECO:0000256|PIRNR:PIRNR500950}.
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 -!- ACTIVITY REGULATION: Present in an inactive conformation in the absence
CC of bound ligand. Binding of PDGFA and/or PDGFB leads to dimerization
CC and activation by autophosphorylation on tyrosine residues.
CC {ECO:0000256|PIRNR:PIRNR500950}.
CC -!- SUBUNIT: Interacts with homodimeric PDGFA, PDGFB and PDGFC, and with
CC heterodimers formed by PDGFA and PDGFB. Monomer in the absence of bound
CC ligand. {ECO:0000256|PIRNR:PIRNR500950}.
CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000256|ARBA:ARBA00004251,
CC ECO:0000256|PIRNR:PIRNR500950}; Single-pass type I membrane protein
CC {ECO:0000256|ARBA:ARBA00004251, ECO:0000256|PIRNR:PIRNR500950}. Cell
CC projection, cilium {ECO:0000256|ARBA:ARBA00004138}. Golgi apparatus
CC {ECO:0000256|ARBA:ARBA00004555}. Membrane
CC {ECO:0000256|RuleBase:RU000311}; Single-pass type I membrane protein
CC {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|PIRNR:PIRNR500950, ECO:0000256|RuleBase:RU000311}.
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DR AlphaFoldDB; A0A8C8AJ95; -.
DR Ensembl; ENSOSUT00000007475.1; ENSOSUP00000007194.1; ENSOSUG00000005347.1.
DR Proteomes; UP000694552; Unplaced.
DR GO; GO:0005929; C:cilium; IEA:UniProtKB-SubCell.
DR GO; GO:0005794; C:Golgi apparatus; IEA:UniProtKB-SubCell.
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:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0005018; F:platelet-derived growth factor alpha-receptor activity; IEA:InterPro.
DR GO; GO:0048407; F:platelet-derived growth factor binding; IEA:TreeGrafter.
DR GO; GO:0006935; P:chemotaxis; IEA:UniProtKB-KW.
DR GO; GO:0048701; P:embryonic cranial skeleton morphogenesis; IEA:TreeGrafter.
DR CDD; cd05859; Ig4_PDGFR; 1.
DR CDD; cd05105; PTKc_PDGFR_alpha; 1.
DR FunFam; 2.60.40.10:FF:000720; Platelet-derived growth factor receptor alpha; 1.
DR FunFam; 2.60.40.10:FF:000725; Platelet-derived growth factor receptor alpha; 1.
DR FunFam; 2.60.40.10:FF:000776; Platelet-derived growth factor receptor alpha; 1.
DR FunFam; 2.60.40.10:FF:000832; Platelet-derived growth factor receptor alpha; 1.
DR FunFam; 3.30.200.20:FF:000025; Platelet-derived growth factor receptor alpha; 1.
DR FunFam; 2.60.40.10:FF:000223; Platelet-derived growth factor receptor beta; 1.
DR FunFam; 1.10.510.10:FF:001735; T0011027 isoform 1; 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; IPR013098; Ig_I-set.
DR InterPro; IPR003599; Ig_sub.
DR InterPro; IPR003598; Ig_sub2.
DR InterPro; IPR011009; Kinase-like_dom_sf.
DR InterPro; IPR027290; PDGFRA.
DR InterPro; IPR000719; Prot_kinase_dom.
DR InterPro; IPR017441; Protein_kinase_ATP_BS.
DR InterPro; IPR050122; RTK.
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:SF52; PLATELET-DERIVED GROWTH FACTOR RECEPTOR ALPHA; 1.
DR PANTHER; PTHR24416; TYROSINE-PROTEIN KINASE RECEPTOR; 1.
DR Pfam; PF07679; I-set; 2.
DR Pfam; PF25305; Ig_PDGFR_d4; 1.
DR Pfam; PF07714; PK_Tyr_Ser-Thr; 1.
DR Pfam; PF21339; VEGFR-1-like_Ig-like; 1.
DR PIRSF; PIRSF500950; Alpha-PDGF_receptor; 1.
DR PIRSF; PIRSF000615; TyrPK_CSF1-R; 1.
DR PRINTS; PR01832; VEGFRECEPTOR.
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; 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|PIRNR:PIRNR500950};
KW Cell membrane {ECO:0000256|ARBA:ARBA00022475,
KW ECO:0000256|PIRNR:PIRNR500950};
KW Cell projection {ECO:0000256|ARBA:ARBA00023273};
KW Chemotaxis {ECO:0000256|ARBA:ARBA00022500, ECO:0000256|PIRNR:PIRNR500950};
KW Developmental protein {ECO:0000256|ARBA:ARBA00022473,
KW ECO:0000256|PIRNR:PIRNR500950};
KW Disulfide bond {ECO:0000256|ARBA:ARBA00023157,
KW ECO:0000256|PIRSR:PIRSR500950-52};
KW Glycoprotein {ECO:0000256|ARBA:ARBA00023180};
KW Golgi apparatus {ECO:0000256|ARBA:ARBA00023034};
KW Immunoglobulin domain {ECO:0000256|ARBA:ARBA00023319,
KW ECO:0000256|RuleBase:RU000311};
KW Kinase {ECO:0000256|ARBA:ARBA00022777, ECO:0000256|PIRNR:PIRNR500950};
KW Magnesium {ECO:0000256|PIRSR:PIRSR000615-3};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|PIRNR:PIRNR500950};
KW Metal-binding {ECO:0000256|PIRSR:PIRSR000615-3};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741,
KW ECO:0000256|PIRNR:PIRNR500950};
KW Phosphoprotein {ECO:0000256|ARBA:ARBA00022553};
KW Receptor {ECO:0000256|ARBA:ARBA00023170, ECO:0000256|PIRNR:PIRNR500950};
KW Reference proteome {ECO:0000313|Proteomes:UP000694552};
KW Repeat {ECO:0000256|ARBA:ARBA00022737};
KW Signal {ECO:0000256|ARBA:ARBA00022729, ECO:0000256|SAM:SignalP};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|PIRNR:PIRNR500950};
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 ECO:0000256|PIRNR:PIRNR500950};
KW Ubl conjugation {ECO:0000256|ARBA:ARBA00022843}.
FT SIGNAL 1..23
FT /evidence="ECO:0000256|SAM:SignalP"
FT CHAIN 24..1087
FT /note="Platelet-derived growth factor receptor alpha"
FT /evidence="ECO:0000256|SAM:SignalP"
FT /id="PRO_5034275551"
FT TRANSMEM 525..549
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 215..306
FT /note="Ig-like"
FT /evidence="ECO:0000259|PROSITE:PS50835"
FT DOMAIN 593..954
FT /note="Protein kinase"
FT /evidence="ECO:0000259|PROSITE:PS50011"
FT REGION 1017..1059
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 1039..1057
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 818
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-1"
FT BINDING 572
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-3"
FT BINDING 599..607
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR500950-51"
FT BINDING 600..607
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-2"
FT BINDING 627
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-2,
FT ECO:0000256|PROSITE-ProRule:PRU10141"
FT BINDING 675..681
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-2"
FT BINDING 822
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-2"
FT BINDING 823
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-3"
FT BINDING 836
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-3"
FT SITE 962
FT /note="Important for interaction with phosphotyrosine-
FT binding proteins"
FT /evidence="ECO:0000256|PIRSR:PIRSR000615-4"
FT DISULFID 49..99
FT /evidence="ECO:0000256|PIRSR:PIRSR500950-52"
FT DISULFID 149..189
FT /evidence="ECO:0000256|PIRSR:PIRSR500950-52"
FT DISULFID 235..290
FT /evidence="ECO:0000256|PIRSR:PIRSR500950-52"
FT DISULFID 435..501
FT /evidence="ECO:0000256|PIRSR:PIRSR500950-52"
SQ SEQUENCE 1087 AA; 122892 MW; D5E5C03EA0F194EE CRC64;
MGTSPWMFLI LGCFLTGPFL TFCQLPLPTI VPNRNEMVVQ LNSNFTLKCS GDSEVSWQYP
VTEGSHRIDI RHEENNSGLF VTVLEVRNAS AAHTGLYVCY YNHTQVEDGE VEGKDMYIYV
PDPDMPFVPS IPEDQFILVE EGDPTVIPCR TSHPNAQVTL INSLDKAVYA FYDSKQGFIG
NFPAGSYTCK TTVKGVEFKS DEFLIYILRA TSQLPVEIEA LKTVYKAGET IVVTCVVFDN
EVVNLQWNYP GKVKEKGLIK LDDIKVPSQK LVYTLTIPEA SVKDTGDYEC TARHATKEVK
ENKKVVITVH EKGFVHLEPQ FSPLEAVNLH EVKNFVVDVQ AYPAPKMYWL KDNVTLIENL
TEIVTSSSRV QETRFQSILK LIRAKEEDSG YYTLVAENED EIKRYTFSLL IQVPALILDL
VDDHHGSAGG QTVRCLAEGT PLPDVEWLVC KDIKKCSNDT SWTLLTNNIS DIHMEAHLDE
KNMVESQVTF QKVEETLAVR CVARNDLGAV TRELKLVAPT LRSELTVAAA VLVLLVIVII
SLIVLVIIWK QKPRYEIRWR VIESISPDGH EYIYVDPMQL PYDSRWEFPR DGLVLGRILG
SGAFGKVVEG TAYGLSRSQP VMKVAVKMLK PTARSSEKQA LMSELKIMTH LGPHLNIVNL
LGACTKSGPI YIITEYCFYG DLVNYLHKNR DNFLNRHPEK PKKDLDIFGM NPADESTRSY
VILSFENTGE YMDMKQADTT QYVPMLERKE GSKYSDIQRS VYDRPASYKK KSMSESEVKN
LLSDDSSEGL SLLDLLSFTY QVARGMEFLA SKNCVHRDLA ARNVLLAQGK IVKICDFGLA
RDIMHDSNYV SKGSTFLPVK WMAPESIFDN LYTTLSDVWS YGILLWEIFS LGGTPYPGMM
VDSTFYNKIK SGYRMAKPDH ATNEVYEIMV KCWNSEPEKR PSFYHLSEIV ESLLPGEYKK
SYEKIHLDFL KSDHPAVTRM RGDCDNAYIG VTYKNEDKLK DRESGFDEQR LSADSGYIIP
LPDIDPVSED ELGKRNRHSS QTSEESAIET GSSSSTFIKR EDETIEDIDM MDDIGIDSSD
LVEDSFL
//
