Skip Header

Contribute Send feedback
Read comments (0) or add your own

Reviewed, UniProtKB/Swiss-Prot P18510 (IL1RA_HUMAN)

Last modified January 19, 2010. Version 127. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (5) | 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 · Web resources · Cross-references · Entry information · Relevant documents

Names and origin

Protein namesRecommended name:
    Interleukin-1 receptor antagonist protein
      Short name=IL-1ra
      Short name=IL-1RN
      Short name=IRAP
Alternative name(s):
    IL1 inhibitor
    ICIL-1RA
    INN=Anakinra
Gene names
Name: IL1RN
Synonyms: IL1F3, IL1RA
OrganismHomo sapiens (Human) [Complete proteome]
Taxonomic identifier9606 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

Protein attributes

Sequence length177 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at protein level.

General annotation (Comments)

Function

Inhibits the activity of IL-1 by binding to its receptor. Has no IL-1 like activity.

Subcellular location

Isoform 1: Secreted.

Isoform 2: Cytoplasm.

Isoform 3: Cytoplasm.

Isoform 4: Cytoplasm.

Tissue specificity

The intracellular form of IL1RN is predominantly expressed in epithelial cells.

Involvement in disease

Genetic variation in IL1RN is associated with susceptibility to diabetic nephropathy [MIM:612628]; also called susceptibility to microvascular complications of diabetes type 4 (MVCD4). Diabetic nephropathy is a kidney disease and resultant kidney function impairment due to the long standing effects of diabetes on the microvasculature (glomerulus) of the kidney. Features include increased urine protein and declining kidney function.

Pharmaceutical use

Available under the name Kineret (Amgen). Used for the reduction in signs and symptoms and slowing the progression of structural damage in moderately to severely active rheumatoid arthritis.

Binary interactions

With

Entry

#Exp.

IntAct

Notes

IL1R1P147781EBI-1026330,EBI-525905

Alternative products

This entry describes 4 isoforms produced by alternative splicing. [Align] [Select]
Isoform 1 (identifier: P18510-1)

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: P18510-2)

Also known as: icIL-1ra;

The sequence of this isoform differs from the canonical sequence as follows:
     1-21: MEICRGLRSHLITLLLFLFHS → MAL
Isoform 3 (identifier: P18510-3)

Also known as: icIL-1ra type II;

The sequence of this isoform differs from the canonical sequence as follows:
     1-21: MEICRGLRSHLITLLLFLFHS → MALADLYEEGGGGGGEGEDNADSK
Isoform 4 (identifier: P18510-4)

The sequence of this isoform differs from the canonical sequence as follows:
     1-34: Missing.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Signal peptide1 – 2525 Ref.12 Ref.13
Chain26 – 177152Interleukin-1 receptor antagonist protein Ref.1
PRO_0000015328

Amino acid modifications

Glycosylation1091N-linked (GlcNAc...) Ref.12 Ref.16
Disulfide bond91 ↔ 141

Natural variations

Alternative sequence1 – 3434Missing in isoform 4.
VSP_002651
Alternative sequence1 – 2121MEICR…FLFHS → MAL in isoform 2.
VSP_002649
Alternative sequence1 – 2121MEICR…FLFHS → MALADLYEEGGGGGGEGEDN ADSK in isoform 3.
VSP_002650
Natural variant1241A → T: dbSNP rs45507693. Ref.23
VAR_049573

Secondary structure

................................ 177
Helix Strand Turn

Details...

Sequences

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

Last modified November 1, 1990. Version 1.
Checksum: D1690776A7394057

FASTA17720,055
        10         20         30         40         50         60 
MEICRGLRSH LITLLLFLFH SETICRPSGR KSSKMQAFRI WDVNQKTFYL RNNQLVAGYL 

        70         80         90        100        110        120 
QGPNVNLEEK IDVVPIEPHA LFLGIHGGKM CLSCVKSGDE TRLQLEAVNI TDLSENRKQD 

       130        140        150        160        170 
KRFAFIRSDS GPTTSFESAA CPGWFLCTAM EADQPVSLTN MPDEGVMVTK FYFQEDE 

« Hide

Isoform 2 (icIL-1ra).

Checksum: C1D66CDF0D2F7B44
Show »

FASTA15917,888
Isoform 3 (icIL-1ra type II).

Checksum: 624A1574C2334229
Show »

FASTA18019,897
Isoform 4.

Checksum: 4CAD6784B890906B
Show »

FASTA14316,142

References

« Hide 'large scale' references
[1]"Purification, cloning, expression and biological characterization of an interleukin-1 receptor antagonist protein."
Carter D.B., Deibel M.R. Jr., Dunn C.J., Tomich C.S.C., Laborde A.L., Slightom J.L., Berger A.E., Bienkowski M.J., Sun F.F., McEwan R.N., Harris P.K.W., Yem A.W., Waszak G.A., Chosay J.G., Sieu L.C., Hardee M.M., Zurcher-Neely H.A., Reardon I.M. expand/collapse author list , Heinrikson R.L., Truesdell S.E., Shelly J.A., Eessalu T.E., Taylor B.M., Tracey D.E.
Nature 344:633-638(1990) [PubMed: 2139180] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
[2]"Primary structure and functional expression from complementary DNA of a human interleukin-1 receptor antagonist."
Eisenberg S.P., Evans R.J., Arend W.P., Verderber E., Brewer M.T., Hannum C.H., Thompson R.C.
Nature 343:341-346(1990) [PubMed: 2137201] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
[3]"Interleukin 1 receptor antagonist is a member of the interleukin 1 gene family: evolution of a cytokine control mechanism."
Eisenberg S.P., Brewer M.T., Verderber E., Heimdal P., Brandhuber B.J., Thompson R.C.
Proc. Natl. Acad. Sci. U.S.A. 88:5232-5236(1991) [PubMed: 1828896] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORM 1).
[4]"Cloning and chromosome mapping of the human interleukin-1 receptor antagonist gene."
Lennard A., Gorman P., Carrier M., Griffiths S., Scotney H., Sheer D., Solari R.
Cytokine 4:83-89(1992) [PubMed: 1385987] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORM 1).
[5]"Intracellular IL-1 receptor antagonist promoter: cell type-specific and inducible regulatory regions."
Jenkins J.K., Drong R.F., Shuck M.E., Bienkowski M.J., Slightom J.L., Arend W.P., Smith M.F. Jr.
J. Immunol. 158:748-755(1997) [PubMed: 8992991] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORMS 1 AND 3).
[6]"cDNA cloning of an intracellular form of the human interleukin 1 receptor antagonist associated with epithelium."
Haskill S., Martin G., van Le L., Morris J., Peace A., Bigler C.F., Jaffe G.J., Hammerberg C., Sporn S.A., Fong S., Arend W.P., Ralph P.
Proc. Natl. Acad. Sci. U.S.A. 88:3681-3685(1991) [PubMed: 1827201] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2).
[7]"Cloning and characterization of a new isoform of the interleukin 1 receptor antagonist."
Muzio M., Polentarutti N., Sironi M., Poli G., De Gioia L., Introna M., Mantovani A., Colotta F.
J. Exp. Med. 182:623-628(1995) [PubMed: 7629520] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 3).
[8]SeattleSNPs variation discovery resource
Submitted (DEC-2002) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[9]"Complete sequencing and characterization of 21,243 full-length human cDNAs."
Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. expand/collapse author list , Yamamoto J., Saito K., Kawai Y., Isono Y., Nakamura Y., Nagahari K., Murakami K., Yasuda T., Iwayanagi T., Wagatsuma M., Shiratori A., Sudo H., Hosoiri T., Kaku Y., Kodaira H., Kondo H., Sugawara M., Takahashi M., Kanda K., Yokoi T., Furuya T., Kikkawa E., Omura Y., Abe K., Kamihara K., Katsuta N., Sato K., Tanikawa M., Yamazaki M., Ninomiya K., Ishibashi T., Yamashita H., Murakawa K., Fujimori K., Tanai H., Kimata M., Watanabe M., Hiraoka S., Chiba Y., Ishida S., Ono Y., Takiguchi S., Watanabe S., Yosida M., Hotuta T., Kusano J., Kanehori K., Takahashi-Fujii A., Hara H., Tanase T.-O., Nomura Y., Togiya S., Komai F., Hara R., Takeuchi K., Arita M., Imose N., Musashino K., Yuuki H., Oshima A., Sasaki N., Aotsuka S., Yoshikawa Y., Matsunawa H., Ichihara T., Shiohata N., Sano S., Moriya S., Momiyama H., Satoh N., Takami S., Terashima Y., Suzuki O., Nakagawa S., Senoh A., Mizoguchi H., Goto Y., Shimizu F., Wakebe H., Hishigaki H., Watanabe T., Sugiyama A., Takemoto M., Kawakami B., Yamazaki M., Watanabe K., Kumagai A., Itakura S., Fukuzumi Y., Fujimori Y., Komiyama M., Tashiro H., Tanigami A., Fujiwara T., Ono T., Yamada K., Fujii Y., Ozaki K., Hirao M., Ohmori Y., Kawabata A., Hikiji T., Kobatake N., Inagaki H., Ikema Y., Okamoto S., Okitani R., Kawakami T., Noguchi S., Itoh T., Shigeta K., Senba T., Matsumura K., Nakajima Y., Mizuno T., Morinaga M., Sasaki M., Togashi T., Oyama M., Hata H., Watanabe M., Komatsu T., Mizushima-Sugano J., Satoh T., Shirai Y., Takahashi Y., Nakagawa K., Okumura K., Nagase T., Nomura N., Kikuchi H., Masuho Y., Yamashita R., Nakai K., Yada T., Nakamura Y., Ohara O., Isogai T., Sugano S.
Nat. Genet. 36:40-45(2004) [PubMed: 14702039] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1).
[10]Mural R.J., Istrail S., Sutton G.G., Florea L., Halpern A.L., Mobarry C.M., Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J., Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S., Turner R. expand/collapse author list , Yooseph S., Lu F., Nusskern D.R., Shue B.C., Zheng X.H., Zhong F., Delcher A.L., Huson D.H., Kravitz S.A., Mouchard L., Reinert K., Remington K.A., Clark A.G., Waterman M.S., Eichler E.E., Adams M.D., Hunkapiller M.W., Myers E.W., Venter J.C.
Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
[11]"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 2).
Tissue: Pancreas.
[12]"Interleukin-1 receptor antagonist activity of a human interleukin-1 inhibitor."
Hannum C.H., Wilcox C.J., Arend W.P., Joslin F.G., Dripps D.J., Heimdal P.L., Armes L.G., Sommer A., Eisenberg S.P., Thompson R.C.
Nature 343:336-340(1990) [PubMed: 2137200] [Abstract]
Cited for: PROTEIN SEQUENCE OF 26-45, GLYCOSYLATION AT ASN-109.
[13]"Purification and characterization of interleukin 1 receptor level antagonist proteins from THP-1 cells."
Bienkowski M.J., Eessalu T.E., Berger A.E., Truesdell S.E., Shelly J.A., Laborde A.L., Zurcher-Neely H.A., Reardon I.M., Heinrikson R.L., Chosay J.G., Tracey D.E.
J. Biol. Chem. 265:14505-14511(1990) [PubMed: 2143761] [Abstract]
Cited for: PROTEIN SEQUENCE OF 26-52.
[14]"Detection of an interleukin-1 intracellular receptor antagonist mRNA variant."
Weissbach L., Tran K., Colquhoun S.A., Champliaud M.-F., Towle C.A.
Biochem. Biophys. Res. Commun. 244:91-95(1998) [PubMed: 9514884] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 35-177 (ISOFORM 4).
[15]"A sequence-based map of the nine genes of the human interleukin-1 cluster."
Nicklin M.J.H., Barton J.L., Nguyen M., Fitzgerald M.G., Duff W.G., Kornman K.
Genomics 79:718-725(2002) [PubMed: 11991722] [Abstract]
Cited for: IDENTIFICATION (ISOFORM 2).
[16]"Human plasma N-glycoproteome analysis by immunoaffinity subtraction, hydrazide chemistry, and mass spectrometry."
Liu T., Qian W.-J., Gritsenko M.A., Camp D.G. II, Monroe M.E., Moore R.J., Smith R.D.
J. Proteome Res. 4:2070-2080(2005) [PubMed: 16335952] [Abstract]
Cited for: GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-109, MASS SPECTROMETRY.
Tissue: Plasma.
[17]"Secondary structure and topology of interleukin-1 receptor antagonist protein determined by heteronuclear three-dimensional NMR spectroscopy."
Stockman B.J., Scahill T.A., Roy M., Ulrich E.L., Strakalaitis N.A., Brunner D.P., Yem A.W., Deibel M.R. Jr.
Biochemistry 31:5237-5244(1992) [PubMed: 1534997] [Abstract]
Cited for: STRUCTURE BY NMR.
[18]"Solution structure of human interleukin-1 receptor antagonist protein."
Stockman B.J., Scahill T.A., Strakalaitis N.A., Brunner D.P., Yem A.W., Deibel M.R. Jr.
FEBS Lett. 349:79-83(1994) [PubMed: 8045306] [Abstract]
Cited for: STRUCTURE BY NMR.
[19]"X-ray structure of interleukin-1 receptor antagonist at 2.0-A resolution."
Vigers G.P.A., Caffes P., Evans R.J., Thompson R.C., Eisenberg S.P., Brandhuber B.J.
J. Biol. Chem. 269:12874-12879(1994) [PubMed: 8175703] [Abstract]
Cited for: X-RAY CRYSTALLOGRAPHY (2.0 ANGSTROMS).
[20]"Refined crystal structure of the interleukin-1 receptor antagonist. Presence of a disulfide link and a cis-proline."
Schreuder H.A., Rondeau J.-M., Tardif C., Soffientini A., Sarubbi E., Akeson A., Bowlin T.L., Yanofsky S., Barrett R.W.
Eur. J. Biochem. 227:838-847(1995) [PubMed: 7867645] [Abstract]
Cited for: X-RAY CRYSTALLOGRAPHY (2.1 ANGSTROMS).
[21]"A new cytokine-receptor binding mode revealed by the crystal structure of the IL-1 receptor with an antagonist."
Schreuder H., Tardif C., Trump-Kallmeyer S., Soffientini A., Sarubbi E., Akeson A., Bowlin T., Yanofsky S., Barrett R.W.
Nature 386:194-200(1997) [PubMed: 9062194] [Abstract]
Cited for: X-RAY CRYSTALLOGRAPHY (2.7 ANGSTROMS) OF 32-177 IN COMPLEX WITH IL1R.
[22]"Interleukin-1 receptor antagonist allele (IL1RN*2) associated with nephropathy in diabetes mellitus."
Blakemore A.I.F., Cox A., Gonzalez A.-M., Maskil J.K., Hughes M.E., Wilson R.M., Ward J.D., Duff G.W.
Hum. Genet. 97:369-374(1996) [PubMed: 8786086] [Abstract]
Cited for: INVOLVEMENT IN DIABETIC NEPHROPATHY SUSCEPTIBILITY.
[23]"DNA sequencing of a cytogenetically normal acute myeloid leukaemia genome."
Ley T.J., Mardis E.R., Ding L., Fulton B., McLellan M.D., Chen K., Dooling D., Dunford-Shore B.H., McGrath S., Hickenbotham M., Cook L., Abbott R., Larson D.E., Koboldt D.C., Pohl C., Smith S., Hawkins A., Abbott S. expand/collapse author list , Locke D., Hillier L.W., Miner T., Fulton L., Magrini V., Wylie T., Glasscock J., Conyers J., Sander N., Shi X., Osborne J.R., Minx P., Gordon D., Chinwalla A., Zhao Y., Ries R.E., Payton J.E., Westervelt P., Tomasson M.H., Watson M., Baty J., Ivanovich J., Heath S., Shannon W.D., Nagarajan R., Walter M.J., Link D.C., Graubert T.A., DiPersio J.F., Wilson R.K.
Nature 456:66-72(2008) [PubMed: 18987736] [Abstract]
Cited for: VARIANT [LARGE SCALE ANALYSIS] THR-124.
+Additional computationally mapped references.

Web resources

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
X53296 mRNA. Translation: CAA37386.1.
X52015 mRNA. Translation: CAA36262.1.
M63099 Genomic DNA. Translation: AAB41943.1.
X64532 Genomic DNA. Translation: CAA45832.1.
U65590 Genomic DNA. Translation: AAB92270.1.
U65590 Genomic DNA. Translation: AAB92268.1.
U65590 Genomic DNA. Translation: AAB92269.1.
M55646 mRNA. Translation: AAA59138.1.
X84348 mRNA. Translation: CAA59087.1.
AY196903 Genomic DNA. Translation: AAN87150.1.
AK290926 mRNA. Translation: BAF83615.1.
CH471217 Genomic DNA. Translation: EAW73625.1.
BC009745 mRNA. Translation: AAH09745.1.
AF043143 mRNA. Translation: AAC39672.1.
BN000002 Genomic DNA. Translation: CAD29879.1.
IPIIPI00000045.
IPI00174541.
IPI00175024.
IPI00218573.
PIRA30368. A40956.
A39386. I37893.
RefSeqNP_000568.1.
NP_776213.1.
NP_776214.1.
NP_776215.1.
UniGeneHs.81134

3D structure databases

PDBe
RCSB PDB
PDBj
EntryMethodResolution (Å)ChainPositionsPDBsum
1ILRX-ray2.101/226-177[»]
1ILTX-ray2.00A/B26-177[»]
1IRAX-ray2.70X26-177[»]
1IRPNMR-A26-177[»]
1ITNmodel-A31-177[»]
2IRTX-ray3.20A/B26-177[»]
ModBaseSearch...

Protein-protein interaction databases

DIPDIP-3513N.
IntActP18510. 1 interaction.
STRINGP18510.

2-D gel databases

Aarhus/Ghent-2DPAGE7104. IEF.
7105. IEF.

Proteomic databases

PRIDEP18510.

Genome annotation databases

EnsemblENST00000409930; ENSP00000387173; ENSG00000136689; Homo sapiens. [Genome view]
GeneID3557.
KEGGhsa:3557.
UCSCuc002tiy.1. human.
uc002tjb.1. human.

Organism-specific databases

CTD3557.
GeneCardsGC02P113591.
H-InvDBHIX0002389.
HGNCHGNC:6000. IL1RN.
HPACAB009633.
HPA001482.
MIM147679. gene.
612628. phenotype.
Orphanet210115. Autoinflammatory disease due to interleukin-1 receptor antagonist deficiency.
PharmGKBPA29816.
GenAtlasSearch...

Phylogenomic databases

eggNOGprNOG14050.
HOVERGENP18510.
OMATFIRSDS.

Enzyme and pathway databases

Pathway_Interaction_DBil1pathway. IL1-mediated signaling events.

Gene expression databases

ArrayExpressP18510.
BgeeP18510.
CleanExHS_IL1RN.
GenevestigatorP18510.
GermOnlineENSG00000136689. Homo sapiens.

Family and domain databases

InterProIPR008996. Cytokine_IL1-like.
IPR003297. IL_rcpt_IL1RA.
IPR020877. Interleukin-1_CS.
IPR000975. Interleukin_1.
[Graphical view]
PfamPF00340. IL1. 1 hit.
[Graphical view]
PRINTSPR00264. INTERLEUKIN1.
PR01360. INTRLEUKIN1X.
SMARTSM00125. IL1. 1 hit.
[Graphical view]
PROSITEPS00253. INTERLEUKIN_1. 1 hit.
[Graphical view]
ProtoNetSearch...

Other Resources

DrugBankDB00026. Anakinra.
NextBio13886.
SOURCESearch...

Entry information

Entry nameIL1RA_HUMAN
AccessionPrimary (citable) accession number: P18510
Secondary accession number(s): A8K4G1 expand/collapse secondary AC list , Q14628, Q7RTZ4, Q96GD6, Q9UPC0
Entry history
Integrated into UniProtKB/Swiss-Prot: November 1, 1990
Last sequence update: November 1, 1990
Last modified: January 19, 2010
This is version 127 of the entry and version 1 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.

Relevant documents

Human chromosome 2

Human chromosome 2: entries, gene names and cross-references to MIM

Human entries with polymorphisms or disease mutations

List of human entries with polymorphisms or disease mutations

Human polymorphisms and disease mutations

Index of human polymorphisms and disease mutations

MIM cross-references

Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot

PDB cross-references

Index of Protein Data Bank (PDB) cross-references

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