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Reviewed, UniProtKB/Swiss-Prot P51617 (IRAK1_HUMAN)

Last modified February 9, 2010. Version 104. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (7) | Third-party data | Customize display text xml rdf/xml gff fasta
Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Binary interactions · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents

Names and origin

Protein namesRecommended name:
    Interleukin-1 receptor-associated kinase 1
      Short name=IRAK-1
    EC=2.7.11.1
Gene names
Name: IRAK1
Synonyms: IRAK
OrganismHomo sapiens (Human) [Complete proteome]
Taxonomic identifier9606 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

Protein attributes

Sequence length712 AA.
Sequence statusComplete.
Protein existenceEvidence at protein level.

General annotation (Comments)

Function

Binds to the IL-1 type I receptor following IL-1 engagement, triggering intracellular signaling cascades leading to transcriptional up-regulation and mRNA stabilization. Isoform 1 binds rapidly but is then degraded allowing isoform 2 to mediate a slower, more sustained response to the cytokine. Isoform 2 is inactive suggesting that the kinase activity of this enzyme is not required for IL-1 signaling. Once phosphorylated, IRAK1 recruits the adapter protein PELI1. Ref.3 Ref.9

Catalytic activity

ATP + a protein = ADP + a phosphoprotein.

Cofactor

Magnesium.

Subunit structure

IL-1 stimulation leads to the formation of a signaling complex which dissociates from the IL-1 receptor following the binding of PELI1. Interacts with IL1RL1. Interacts with IRAK1BP1 By similarity. Ref.5 Ref.6 Ref.7 Ref.8 Ref.10

Tissue specificity

Isoform 1 and isoform 2 are ubiquitously expressed in all tissues examined, with isoform 1 being more strongly expressed than isoform 2. Ref.3

Post-translational modification

Autophosphorylated or is transphosphorylated by IRAK4 following recruitment to the IL-1RI. In the case of isoform 1, this is linked to ubiquitination and degradation. Ref.3 Ref.11 Ref.12

Polyubiquitinated; after cell stimulation with IL-1-beta. Polyubiquitination occurs with polyubiquitin chains linked through 'Lys-63'.

Sequence similarities

Belongs to the protein kinase superfamily. TKL Ser/Thr protein kinase family. Pelle subfamily.

Contains 1 protein kinase domain.

Ontologies

Keywords
   Coding sequence diversityAlternative splicing
Polymorphism
   LigandATP-binding
Magnesium
Nucleotide-binding
   Molecular functionKinase
Serine/threonine-protein kinase
Transferase
   PTMPhosphoprotein
Ubl conjugation
   Technical termComplete proteome
Direct protein sequencing
Gene Ontology (GO)
   Biological processMyD88-dependent toll-like receptor signaling pathway

Traceable author statement. Source: UniProtKB

activation of NF-kappaB-inducing kinase activity Ref.3

Inferred from direct assay. Source: UniProtKB

anti-apoptosis

Inferred from Experiment. Source: Reactome

interleukin-1-mediated signaling pathway

Inferred from mutant phenotype. Source: UniProtKB

lipopolysaccharide-mediated signaling pathway

Inferred from mutant phenotype. Source: UniProtKB

negative regulation of NF-kappaB transcription factor activity

Inferred from mutant phenotype. Source: UniProtKB

positive regulation of NF-kappaB transcription factor activity

Inferred from direct assay. Source: UniProtKB

positive regulation of transcription Ref.3

Non-traceable author statement. Source: UniProtKB

protein amino acid autophosphorylation Ref.3

Non-traceable author statement. Source: UniProtKB

protein oligomerization

Inferred from mutant phenotype. Source: UniProtKB

regulation of cytokine-mediated signaling pathway

Inferred from mutant phenotype. Source: UniProtKB

response to interleukin-1

Inferred from mutant phenotype. Source: UniProtKB

response to lipopolysaccharide

Inferred from mutant phenotype. Source: UniProtKB

toll-like receptor 2 signaling pathway

Inferred from mutant phenotype. Source: UniProtKB

transmembrane receptor protein serine/threonine kinase signaling pathway Ref.3

Non-traceable author statement. Source: UniProtKB

   Cellular componentcytosol

Inferred from Experiment. Source: Reactome

interleukin-1 receptor complex

Non-traceable author statement. Source: UniProtKB

   Molecular functionATP binding

Inferred from electronic annotation. Source: UniProtKB-KW

NF-kappaB-inducing kinase activity Ref.1

Traceable author statement. Source: ProtInc

magnesium ion binding

Inferred from electronic annotation. Source: UniProtKB-KW

protein binding Ref.3 Ref.7 Ref.8

Inferred from physical interaction. Source: UniProtKB

protein heterodimerization activity

Inferred from physical interaction. Source: UniProtKB

protein homodimerization activity Ref.3

Non-traceable author statement. Source: UniProtKB

transcription activator activity Ref.3

Non-traceable author statement. Source: UniProtKB

Complete GO annotation...

Alternative products

This entry describes 3 isoforms produced by alternative splicing. [Align] [Select]
Isoform 1 (identifier: P51617-1)

Also known as: a;

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.
Isoform 2 (identifier: P51617-2)

Also known as: b;

The sequence of this isoform differs from the canonical sequence as follows:
     513-542: Missing.
Note: Inactive.
Isoform 3 (identifier: P51617-3)

The sequence of this isoform differs from the canonical sequence as follows:
     45-45: F → FGGWRRAAGGREARGLLAPTPDAPRPA
     478-492: Missing.
     513-542: Missing.
Note: No experimental confirmation available.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 712712Interleukin-1 receptor-associated kinase 1
PRO_0000086030

Regions

Domain212 – 521310Protein kinase
Nucleotide binding218 – 2269ATP By similarity

Sites

Active site3401Proton acceptor By similarity
Binding site2391ATP

Amino acid modifications

Modified residue1311Phosphoserine Ref.12
Modified residue3711Phosphoserine Ref.12
Modified residue5681Phosphoserine Ref.11

Natural variations

Alternative sequence451F → FGGWRRAAGGREARGLLAPT PDAPRPA in isoform 3.
VSP_011849
Alternative sequence478 – 49215Missing in isoform 3.
VSP_011850
Alternative sequence513 – 54230Missing in isoform 2 and isoform 3.
VSP_011851
Natural variant1941R → H: dbSNP rs11465830.
VAR_051629
Natural variant1961F → S: dbSNP rs1059702. Ref.1
VAR_051630
Natural variant2031C → S: dbSNP rs10127175.
VAR_051631
Natural variant3981T → M: dbSNP rs56340948. Ref.14
VAR_040573
Natural variant4121V → M in a glioblastoma multiforme sample; somatic mutation. Ref.14
VAR_040574
Natural variant4211Q → H in a breast pleomorphic lobular carcinoma sample; somatic mutation. Ref.14
VAR_040575
Natural variant5321S → L: dbSNP rs1059703. Ref.1 Ref.14
VAR_040576
Natural variant6191G → S: dbSNP rs34112487. Ref.14
VAR_040577
Natural variant6251T → M: dbSNP rs35638718. Ref.14
VAR_040578
Natural variant6381R → W: dbSNP rs56082801. Ref.14
VAR_040579
Natural variant6901S → G in a lung adenocarcinoma sample; somatic mutation. Ref.14
VAR_040580

Experimental info

Mutagenesis2391K → S: Loss of kinase activity. Ref.9

Sequences

Sequence LengthMass (Da)Tools
Isoform 1 (a) [UniParc].

Last modified December 1, 2000. Version 2.
Checksum: A7ADED75D3A3981D

FASTA71276,537
        10         20         30         40         50         60 
MAGGPGPGEP AAPGAQHFLY EVPPWVMCRF YKVMDALEPA DWCQFAALIV RDQTELRLCE 

        70         80         90        100        110        120 
RSGQRTASVL WPWINRNARV ADLVHILTHL QLLRARDIIT AWHPPAPLPS PGTTAPRPSS 

       130        140        150        160        170        180 
IPAPAEAEAW SPRKLPSSAS TFLSPAFPGS QTHSGPELGL VPSPASLWPP PPSPAPSSTK 

       190        200        210        220        230        240 
PGPESSVSLL QGARPFPFCW PLCEISRGTH NFSEELKIGE GGFGCVYRAV MRNTVYAVKR 

       250        260        270        280        290        300 
LKENADLEWT AVKQSFLTEV EQLSRFRHPN IVDFAGYCAQ NGFYCLVYGF LPNGSLEDRL 

       310        320        330        340        350        360 
HCQTQACPPL SWPQRLDILL GTARAIQFLH QDSPSLIHGD IKSSNVLLDE RLTPKLGDFG 

       370        380        390        400        410        420 
LARFSRFAGS SPSQSSMVAR TQTVRGTLAY LPEEYIKTGR LAVDTDTFSF GVVVLETLAG 

       430        440        450        460        470        480 
QRAVKTHGAR TKYLKDLVEE EAEEAGVALR STQSTLQAGL AADAWAAPIA MQIYKKHLDP 

       490        500        510        520        530        540 
RPGPCPPELG LGLGQLACCC LHRRAKRRPP MTQVYERLEK LQAVVAGVPG HSEAASCIPP 

       550        560        570        580        590        600 
SPQENSYVSS TGRAHSGAAP WQPLAAPSGA SAQAAEQLQR GPNQPVESDE SLGGLSAALR 

       610        620        630        640        650        660 
SWHLTPSCPL DPAPLREAGC PQGDTAGESS WGSGPGSRPT AVEGLALGSS ASSSSEPPQI 

       670        680        690        700        710 
IINPARQKMV QKLALYEDGA LDSLQLLSSS SLPGLGLEQD RQGPEESDEF QS 

« Hide

Isoform 2 (b).

Checksum: 687C7EB6064FA918
Show »

FASTA68273,421
Isoform 3.

Checksum: D744A32E997E1246
Show »

FASTA69374,560

References

« Hide 'large scale' references
[1]"IRAK: a kinase associated with the interleukin-1 receptor."
Cao Z., Henzel W.J., Gao X.
Science 271:1128-1131(1996) [PubMed: 8599092] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), PARTIAL PROTEIN SEQUENCE, VARIANTS SER-196 AND LEU-532.
[2]"Comparative sequence analysis of the MECP2-locus in human and mouse reveals new transcribed regions."
Reichwald K., Thiesen J., Wiehe T., Weitzel J., Poustka W.A., Rosenthal A., Platzer M., Stratling W.H., Kioschis P.
Mamm. Genome 11:182-190(2000) [PubMed: 10723722] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORM 1).
[3]"IRAK1b, a novel alternative splice variant of interleukin-1 receptor-associated kinase (IRAK), mediates interleukin-1 signaling and has prolonged stability."
Jensen L.E., Whitehead A.S.
J. Biol. Chem. 276:29037-29044(2001) [PubMed: 11397809] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), FUNCTION, TISSUE SPECIFICITY, PHOSPHORYLATION.
[4]"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
The MGC Project Team
Genome Res. 14:2121-2127(2004) [PubMed: 15489334] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 3).
Tissue: Placenta.
[5]"IRAK4: a novel member of the IRAK family with the properties of an IRAK-kinase."
Li S., Strelow A., Fontana E.J., Wesche H.
Proc. Natl. Acad. Sci. U.S.A. 99:5567-5572(2002) [PubMed: 11960013] [Abstract]
Cited for: INTERACTION WITH IRAK4.
[6]"Pellino 1 is required for interleukin-1 (IL-1)-mediated signaling through its interaction with the IL-1 receptor-associated kinase 4 (IRAK4)-IRAK-tumor necrosis factor receptor-associated factor 6 (TRAF6) complex."
Jiang Z., Johnson H.J., Nie H., Qin J., Bird T.A., Li X.
J. Biol. Chem. 278:10952-10956(2003) [PubMed: 12496252] [Abstract]
Cited for: INTERACTION WITH PELI1.
[7]"Characterization of Pellino2, a substrate of IRAK1 and IRAK4."
Strelow A., Kollewe C., Wesche H.
FEBS Lett. 547:157-161(2003) [PubMed: 12860405] [Abstract]
Cited for: INTERACTION WITH PELI2.
[8]"Pellino3, a novel member of the Pellino protein family, promotes activation of c-Jun and Elk-1 and may act as a scaffolding protein."
Jensen L.E., Whitehead A.S.
J. Immunol. 171:1500-1506(2003) [PubMed: 12874243] [Abstract]
Cited for: INTERACTION WITH PELI3.
[9]"IRAK4 kinase activity is redundant for interleukin-1 (IL-1) receptor-associated kinase phosphorylation and IL-1 responsiveness."
Qin J., Jiang Z., Qian Y., Casanova J.-L., Li X.
J. Biol. Chem. 279:26748-26753(2004) [PubMed: 15084582] [Abstract]
Cited for: FUNCTION, MUTAGENESIS OF LYS-239.
[10]"IL-33, an interleukin-1-like cytokine that signals via the IL-1 receptor-related protein ST 2 and induces T helper type 2-associated cytokines."
Schmitz J., Owyang A., Oldham E., Song Y., Murphy E., McClanahan T.K., Zurawski G., Moshrefi M., Qin J., Li X., Gorman D.M., Bazan J.F., Kastelein R.A.
Immunity 23:479-490(2005) [PubMed: 16286016] [Abstract]
Cited for: INTERACTION WITH IL1RL1.
[11]"Quantitative phosphoproteome analysis using a dendrimer conjugation chemistry and tandem mass spectrometry."
Tao W.A., Wollscheid B., O'Brien R., Eng J.K., Li X.-J., Bodenmiller B., Watts J.D., Hood L., Aebersold R.
Nat. Methods 2:591-598(2005) [PubMed: 16094384] [Abstract]
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-568, MASS SPECTROMETRY.
Tissue: T-cell.
[12]"Kinase-selective enrichment enables quantitative phosphoproteomics of the kinome across the cell cycle."
Daub H., Olsen J.V., Bairlein M., Gnad F., Oppermann F.S., Korner R., Greff Z., Keri G., Stemmann O., Mann M.
Mol. Cell 31:438-448(2008) [PubMed: 18691976] [Abstract]
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-131 AND SER-371, MASS SPECTROMETRY.
[13]"Direct activation of protein kinases by unanchored polyubiquitin chains."
Xia Z.-P., Sun L., Chen X., Pineda G., Jiang X., Adhikari A., Zeng W., Chen Z.J.
Nature 461:114-119(2009) [PubMed: 19675569] [Abstract]
Cited for: UBIQUITINATION.
[14]"Patterns of somatic mutation in human cancer genomes."
Greenman C., Stephens P., Smith R., Dalgliesh G.L., Hunter C., Bignell G., Davies H., Teague J., Butler A., Stevens C., Edkins S., O'Meara S., Vastrik I., Schmidt E.E., Avis T., Barthorpe S., Bhamra G., Buck G. expand/collapse author list , Choudhury B., Clements J., Cole J., Dicks E., Forbes S., Gray K., Halliday K., Harrison R., Hills K., Hinton J., Jenkinson A., Jones D., Menzies A., Mironenko T., Perry J., Raine K., Richardson D., Shepherd R., Small A., Tofts C., Varian J., Webb T., West S., Widaa S., Yates A., Cahill D.P., Louis D.N., Goldstraw P., Nicholson A.G., Brasseur F., Looijenga L., Weber B.L., Chiew Y.-E., DeFazio A., Greaves M.F., Green A.R., Campbell P., Birney E., Easton D.F., Chenevix-Trench G., Tan M.-H., Khoo S.K., Teh B.T., Yuen S.T., Leung S.Y., Wooster R., Futreal P.A., Stratton M.R.
Nature 446:153-158(2007) [PubMed: 17344846] [Abstract]
Cited for: VARIANTS [LARGE SCALE ANALYSIS] MET-398; MET-412; HIS-421; LEU-532; SER-619; MET-625; TRP-638 AND GLY-690.
+Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
L76191 mRNA. Translation: AAC41949.1.
U52112 Genomic DNA. No translation available.
AF030876 Genomic DNA. Translation: AAC08756.1.
AF346607 mRNA. Translation: AAK62888.1.
BC054000 mRNA. Translation: AAH54000.1.
IPIIPI00293652.
IPI00472717.
IPI00940703.
PIRG02512.
RefSeqNP_001020413.1.
NP_001020414.1.
NP_001560.2.
UniGeneHs.522819

3D structure databases

SMRP51617. Positions 16-124.
ModBaseSearch...

Protein-protein interaction databases

DIPDIP-397N.
IntActP51617. 14 interactions.
STRINGP51617.

PTM databases

PhosphoSiteP51617.

Proteomic databases

PRIDEP51617.

Genome annotation databases

EnsemblENST00000369980; ENSP00000358997; ENSG00000184216; Homo sapiens. [Genome view]
GeneID3654.
KEGGhsa:3654.
UCSCuc004fjr.1. human.
uc004fjs.1. human.

Organism-specific databases

CTD3654.
GeneCardsGC0XM152929.
H-InvDBHIX0017146.
HGNCHGNC:6112. IRAK1.
HPACAB004461.
MIM300283. gene.
PharmGKBPA29912.
GenAtlasSearch...

Phylogenomic databases

eggNOGprNOG16552.
HOGENOMHBG283634.
HOVERGENP51617.
InParanoidP51617.
OMAWHLTPSC.
OrthoDBEOG9NS5XG.
PhylomeDBP51617.

Enzyme and pathway databases

BRENDA2.7.10.2. 247.
2.7.11.1. 247.
Pathway_Interaction_DBil1pathway. IL1-mediated signaling events.
p75ntrpathway. p75(NTR)-mediated signaling.
ReactomeREACT_11061. Signalling by NGF.
REACT_6900. Signaling in Immune system.

Gene expression databases

ArrayExpressP51617.
BgeeP51617.
CleanExHS_IRAK1.
GenevestigatorP51617.
GermOnlineENSG00000184216. Homo sapiens.

Family and domain databases

InterProIPR000488. Death.
IPR011029. DEATH-like.
IPR011009. Kinase-like_dom.
IPR000719. Prot_kinase_cat_dom.
IPR017441. Protein_kinase_ATP_BS.
IPR017442. Se/Thr_prot_kinase-like_dom.
IPR008271. Ser/Thr_prot_kinase_AS.
[Graphical view]
PfamPF00531. Death. 1 hit.
PF00069. Pkinase. 1 hit.
[Graphical view]
PROSITEPS00107. PROTEIN_KINASE_ATP. 1 hit.
PS50011. PROTEIN_KINASE_DOM. 1 hit.
PS00108. PROTEIN_KINASE_ST. 1 hit.
[Graphical view]
ProtoNetSearch...

Other Resources

NextBio14289.
SOURCESearch...

Entry information

Entry nameIRAK1_HUMAN
AccessionPrimary (citable) accession number: P51617
Secondary accession number(s): Q7Z5V4, Q96RL2
Entry history
Integrated into UniProtKB/Swiss-Prot: October 1, 1996
Last sequence update: December 1, 2000
Last modified: February 9, 2010
This is version 104 of the entry and version 2 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation projectHPI (Human Proteome Initiative)
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

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Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Binary interactions · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents