dbPAF Protein Information


Tag Content
dbPAF ID dbPAF-0000713
Uniprot Accession O14654; IRS4_HUMAN;
Genbank Protein ID NP_003595.1;
Genbank Nucleotide ID NM_003604.2;
Protein Name Insulin receptor substrate 4
Protein Synonyms/Alias
Gene Name IRS4
Gene Synonyms/Alias
Organism Homo sapiens(Human)
NCBI Taxa ID 9606
Functional Description
(View all)
Acts as an interface between multiple growth factor receptors possessing tyrosine kinase activity, such as insulin receptor, IGF1R and FGFR1, and a complex network of intracellular signaling molecules containing SH2 domains. Involved in the IGF1R mitogenic signaling pathway. Promotes the AKT1 signaling pathway and BAD phosphorylation during insulin stimulation without activation of RPS6KB1 or the inhibition of apoptosis. Interaction with GRB2 enhances insulin-stimulated mitogen-activated protein kinase activity. May be involved in nonreceptor tyrosine kinase signaling in myoblasts. Plays a pivotal role in the proliferation/differentiation of hepatoblastoma cell through EPHB2 activation upon IGF1 stimulation. May play a role in the signal transduction in response to insulin and to a lesser extent in response to IL4 and GH on mitogenesis. Plays a role in growth, reproduction and glucose homeostasis. May act as negative regulators of the IGF1 signaling pathway by suppressing the function of IRS1 and IRS2.
Phosphorylation Sites
dbPAF PTMs: 57 (View all)
PositionPeptidesSourceReferences ( PMIDs )
7-MASCSFTRDQATRRPhosphoSitePlus22135298
64STATGSRSDSESEEEdbPTM 3.0;HPRD 9;PhosphoPep 2.0;PhosphoSitePlus18452278; 16381945; 23193290; 18988627; 19060867; 22135298
66ATGSRSDSESEEEDLdbPTM 3.0;HPRD 9;PhosphoPep 2.0;PhosphoSitePlus18452278; 16381945; 23193290; 18988627; 19060867; 22135298
68GSRSDSESEEEDLPVdbPTM 3.0;HPRD 9;PhosphoPep 2.0;PhosphoSitePlus18452278; 16381945; 23193290; 18988627; 19060867; 22135298
111DAPARLEYYENARKFPhosphoSitePlus22135298
208SKRRRCGTLGAQPDGPhosphoSitePlus22135298
291RCGHSEQYFFLEVGRPhosphoSitePlus22135298
375PGGWLRRSRFEQFCHPhosphoSitePlus22135298
401LFTRRFVTPSEPVAHPhosphoPep 2.0;PhosphoSitePlus19060867; 22135298
403TRRFVTPSEPVAHSRPhosphoSitePlus22135298
409PSEPVAHSRRGRLHLPhosphoPep 2.0;PhosphoSitePlus19060867; 22135298
427RRSRRAVSVPASFFRPhosphoPep 2.0;PhosphoSitePlus19060867; 22135298
439FFRRLAPSPARPRHPPhosphoSitePlus22135298
501GSGNGRGSGGGQGSNPhosphoPep 2.0;PhosphoSitePlus19060867; 22135298
517QGSSSHSSGGNQCSGPhosphoSitePlus22135298
523SSGGNQCSGEGQGSRPhosphoSitePlus22135298
552CSRDGQGTAGGHGSGPhosphoSitePlus22135298
558GTAGGHGSGGGQRPGPhosphoSitePlus22135298
570RPGGGHGSGGGQGPGPhosphoSitePlus22135298
588GSGGGKNSGGGKGSGPhosphoSitePlus22135298
Sequence
(Fasta)
MASCSFTRDQ ATRRLRGAAA AAAAALAAVV TTPLLSSGTP TALIGTGSSC PGAMWLSTAT 60
GSRSDSESEE EDLPVGEEVC KRGYLRKQKH GHRRYFVLKL ETADAPARLE YYENARKFRH 120
SVRAAAAAAA AAASGAAIPP LIPPRRVITL YQCFSVSQRA DARYRHLIAL FTQDEYFAMV 180
AENESEQESW YLLLSRLILE SKRRRCGTLG AQPDGEPAAL AAAAAAEPPF YKDVWQVIVK 240
PRGLGHRKEL SGVFRLCLTD EEVVFVRLNT EVASVVVQLL SIRRCGHSEQ YFFLEVGRST 300
VIGPGELWMQ VDDCVVAQNM HELFLEKMRA LCADEYRARC RSYSISIGAH LLTLLSARRH 360
LGLVPLEPGG WLRRSRFEQF CHLRAIGDGE DEMLFTRRFV TPSEPVAHSR RGRLHLPRGR 420
RSRRAVSVPA SFFRRLAPSP ARPRHPAEAP NNGARLSSEV SGSGSGNFGE EGNPQGKEDQ 480
EGSGGDYMPM NNWGSGNGRG SGGGQGSNGQ GSSSHSSGGN QCSGEGQGSR GGQGSNGQGS 540
GGNQCSRDGQ GTAGGHGSGG GQRPGGGHGS GGGQGPGDGH GSGGGKNSGG GKGSGSGKGS 600
DGDGERGKSL KKRSYFGKLT QSKQQQMPPP PPPPPPPPPA GGTGGKGKSG GRFRLYFCVD 660
RGATKECKEA KEVKDAEIPE GAARGPHRAR AFDEDEDDPY VPMRPGVATP LVSSSDYMPM 720
APQNVSASKK RHSRSPFEDS RGYMMMFPRV SPPPAPSPPK APDTNKEDDS KDNDSESDYM 780
FMAPGAGAIP KNPRNPQGGS SSKSWSSYFS LPNPFRSSPL GQNDNSEYVP MLPGKFLGRG 840
LDKEVSYNWD PKDAASKPSG EGSFSKPGDG GSPSKPSDHE PPKNKAKRPN RLSFITKGYK 900
IKPKPQKPTH EQREADSSSD YVNMDFTKRE SNTPAPSTQG LPDSWGIIAE PRQSAFSNYV 960
NVEFGVPFPN PANDLSDLLR AIPRANPLSL DSARWPLPPL PLSATGSNAI EEEGDYIEVI 1020
FNSAMTPAMA LADSAIRYDA ETGRIYVVDP FSECCMDISL SPSRCSEPPP VARLLQEEEQ 1080
ERRRPQSRSQ SFFAAARAAV SAFPTDSLER DLSPSSAPAV ASAAEPTLAL SQVVAAASAL 1140
AAAPGIGAAA AAAGFDSASA RWFQPVANAA DAEAVRGAQD VAGGSNPGAH NPSANLARGD 1200
NQAGGAAAAA AAPEPPPRSR RVPRPPERED SDNDDDTHVR MDFARRDNQF DSPKRGR 1258
Keyword

KW-1003--Cell membrane
KW-0181--Complete proteome
KW-0903--Direct protein sequencing
KW-0472--Membrane
KW-0597--Phosphoprotein
KW-0621--Polymorphism
KW-1185--Reference proteome
KW-0677--Repeat
KW-0807--Transducer

Interpro

IPR002404--IRS_PTB
IPR011993--PH/PTB_dom
IPR001849--PH_domain

PROSITE

PS51064--IRS_PTB
PS50003--PH_DOMAIN

Pfam

PF02174--IRS

Gene Ontology

GO:0005829--C:cytosol
GO:0005886--C:plasma membrane
GO:0005158--F:insulin receptor binding
GO:0043548--F:phosphatidylinositol 3-kinase binding
GO:0005070--F:SH3/SH2 adaptor activity
GO:0004871--F:signal transducer activity
GO:0008286--P:insulin receptor signaling pathway
GO:0009967--P:positive regulation of signal transduction
GO:0019216--P:regulation of lipid metabolic process
GO:0007165--P:signal transduction