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UniProtKB/Swiss-Prot entry P05231


[Entry info] [Name and origin] [References] [Comments] [Cross-references] [Keywords] [Features] [Sequence] [Tools]

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Entry information
Entry name IL6_HUMAN
Primary accession number P05231
Secondary accession numbers Q9UCU2 Q9UCU3 Q9UCU4
Integrated into Swiss-Prot on August 13, 1987
Sequence was last modified on August 13, 1987 (Sequence version 1)
Annotations were last modified on    November 4, 2008 (Entry version 113)
Name and origin of the protein
Protein name Interleukin-6 [Precursor]
Synonyms IL-6
B-cell stimulatory factor 2
BSF-2
Interferon beta-2
Hybridoma growth factor
CTL differentiation factor
CDF
Gene name
Name: IL6
Synonyms: IFNB2
From
Homo sapiens (Human) [TaxID: 9606] 
Taxonomy Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo.
Protein existence 1: Evidence at protein level;
References
[1]
NUCLEOTIDE SEQUENCE [MRNA], AND PARTIAL PROTEIN SEQUENCE.
DOI=10.1038/324073a0; PubMed=3491322 [NCBI, ExPASy, EBI, Israel, Japan]
Hirano T., Yasukawa K., Harada H., Taga T., Watanabe Y., Matsuda T., Kashiwamura S., Nakajima K., Koyama K., Iwamatsu A., Tsunasawa S., Sakiyama F., Matsui H., Takahara Y., Taniguchi T., Kishimoto T.;
"Complementary DNA for a novel human interleukin (BSF-2) that induces B lymphocytes to produce immunoglobulin.";
Nature 324:73-76(1986).
[2]
NUCLEOTIDE SEQUENCE [GENOMIC DNA].
PubMed=3500852 [NCBI, ExPASy, EBI, Israel, Japan]
Yasukawa K., Hirano T., Watanabe Y., Muratani K., Matsuda T., Nakai S., Kishimoto T.;
"Structure and expression of human B cell stimulatory factor-2 (BSF-2/IL-6) gene.";
EMBO J. 6:2939-2945(1987).
[3]
NUCLEOTIDE SEQUENCE [MRNA].
PubMed=3538015 [NCBI, ExPASy, EBI, Israel, Japan]
May L.T., Helfgott D.C., Sehgal P.B.;
"Anti-beta-interferon antibodies inhibit the increased expression of HLA-B7 mRNA in tumor necrosis factor-treated human fibroblasts: structural studies of the beta 2 interferon involved.";
Proc. Natl. Acad. Sci. U.S.A. 83:8957-8961(1986).
[4]
NUCLEOTIDE SEQUENCE [MRNA].
PubMed=3023045 [NCBI, ExPASy, EBI, Israel, Japan]
Zilberstein A., Ruggieri R., Korn J.H., Revel M.;
"Structure and expression of cDNA and genes for human interferon-beta-2, a distinct species inducible by growth-stimulatory cytokines.";
EMBO J. 5:2529-2537(1986).
[5]
NUCLEOTIDE SEQUENCE [MRNA].
PubMed=3320204 [NCBI, ExPASy, EBI, Israel, Japan]
Brakenhoff J.P.J., de Groot E.R., Evers R.F., Pannekoek H., Aarden L.A.;
"Molecular cloning and expression of hybridoma growth factor in Escherichia coli.";
J. Immunol. 139:4116-4121(1987).
[6]
NUCLEOTIDE SEQUENCE [MRNA].
DOI=10.1016/0006-291X(89)92328-0; PubMed=2789513 [NCBI, ExPASy, EBI, Israel, Japan]
Tonouchi N., Miwa K., Karasuyama H., Matsui H.;
"Deletion of 3' untranslated region of human BSF-2 mRNA causes stabilization of the mRNA and high-level expression in mouse NIH3T3 cells.";
Biochem. Biophys. Res. Commun. 163:1056-1062(1989).
[7]
NUCLEOTIDE SEQUENCE [GENOMIC DNA / MRNA].
TISSUE=Fibroblast;
PubMed=3758081 [NCBI, ExPASy, EBI, Israel, Japan]
Haegeman G., Content J., Volckaert G., Derynck R., Tavernier J., Fiers W.;
"Structural analysis of the sequence coding for an inducible 26-kDa protein in human fibroblasts.";
Eur. J. Biochem. 159:625-632(1986).
[8]
NUCLEOTIDE SEQUENCE [MRNA].
PubMed=3266463 [NCBI, ExPASy, EBI, Israel, Japan]
Wong G., Witek-Giannotti J., Hewick R., Clark S., Ogawa M.;
"Interleukin 6: identification as a hematopoietic colony-stimulating factor.";
Behring Inst. Mitt. 83:40-47(1988).
[9]
NUCLEOTIDE SEQUENCE [MRNA].
PubMed=1291290 [NCBI, ExPASy, EBI, Israel, Japan]
Chen Q.Y.;
"Stable and efficient expression of human interleukin-6 cDNA in mammalian cells after gene transfer.";
Zhonghua Zhong Liu Za Zhi 14:340-344(1992).
[10]
NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND VARIANTS SER-32 AND VAL-162.
SeattleSNPs program for genomic applications;
Submitted (JUN-2001) to the EMBL/GenBank/DDBJ databases.
[11]
NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
TISSUE=Lung;
DOI=10.1101/gr.2596504; PubMed=15489334 [NCBI, ExPASy, EBI, Israel, Japan]
The MGC Project Team;
"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).";
Genome Res. 14:2121-2127(2004).
[12]
PROTEIN SEQUENCE OF 30-63.
PubMed=3279116 [NCBI, ExPASy, EBI, Israel, Japan]
van Damme J., van Beeumen J., Decock B., van Snick J., de Ley M., Billiau A.;
"Separation and comparison of two monokines with lymphocyte-activating factor activity: IL-1 beta and hybridoma growth factor (HGF). Identification of leukocyte-derived HGF as IL-6.";
J. Immunol. 140:1534-1541(1988).
[13]
PROTEIN SEQUENCE OF 30-50.
PubMed=2610854 [NCBI, ExPASy, EBI, Israel, Japan]
Ming J.E., Cernetti C., Steinman R.M., Granelli-Piperno A.;
"Interleukin 6 is the principal cytolytic T lymphocyte differentiation factor for thymocytes in human leukocyte conditioned medium.";
J. Mol. Cell. Immunol. 4:203-211(1989).
[14]
PROTEIN SEQUENCE OF 30-40, AND GLYCOSYLATION.
DOI=10.1016/1043-4666(91)90018-9; PubMed=1883960 [NCBI, ExPASy, EBI, Israel, Japan]
May L.T., Shaw J.E., Khanna A.K., Zabriskie J.B., Sehgal P.B.;
"Marked cell-type-specific differences in glycosylation of human interleukin-6.";
Cytokine 3:204-211(1991).
[15]
PROTEIN SEQUENCE OF 50-212 OF RECOMBINANT FORM LACKING FIRST DISULFIDE BOND.
PubMed=7851440 [NCBI, ExPASy, EBI, Israel, Japan]
Breton J., la Fiura A., Bertolero F., Orsini G., Valsasina B., Ziliotto R., de Filippis V., Polverino de Laureto P., Fontana A.;
"Structure, stability and biological properties of a N-terminally truncated form of recombinant human interleukin-6 containing a single disulfide bond.";
Eur. J. Biochem. 227:573-581(1995).
[16]
DISULFIDE BONDS.
DOI=10.1016/0003-9861(89)90205-1; PubMed=2472117 [NCBI, ExPASy, EBI, Israel, Japan]
Clogston C.L., Boone T.C., Crandall B.C., Mendiaz E.A., Lu H.S.;
"Disulfide structures of human interleukin-6 are similar to those of human granulocyte colony stimulating factor.";
Arch. Biochem. Biophys. 272:144-151(1989).
[17]
MUTAGENESIS.
DOI=10.1016/0014-5793(91)80491-K; PubMed=2037043 [NCBI, ExPASy, EBI, Israel, Japan]
Luetticken C., Kruettgen A., Moeller C., Heinrich P.C., Rose-John S.;
"Evidence for the importance of a positive charge and an alpha-helical structure of the C-terminus for biological activity of human IL-6.";
FEBS Lett. 282:265-267(1991).
[18]
STRUCTURE BY NMR.
DOI=10.1021/bi951949e; PubMed=8555185 [NCBI, ExPASy, EBI, Israel, Japan]
Nishimura C., Watanabe A., Gouda H., Shimada I., Arata Y.;
"Folding topologies of human interleukin-6 and its mutants as studied by NMR spectroscopy.";
Biochemistry 35:273-281(1996).
[19]
STRUCTURE BY NMR.
DOI=10.1006/jmbi.1997.0933; PubMed=9159484 [NCBI, ExPASy, EBI, Israel, Japan]
Xu G.-Y., Yu H.-A., Hong J., Stahl M., McDonagh T., Kay L.E., Cumming D.A.;
"Solution structure of recombinant human interleukin-6.";
J. Mol. Biol. 268:468-481(1997).
[20]
X-RAY CRYSTALLOGRAPHY (1.9 ANGSTROMS).
DOI=10.1093/emboj/16.5.989; PubMed=9118960 [NCBI, ExPASy, EBI, Israel, Japan]
Somers W., Stahl M., Seehra J.S.;
"1.9-A crystal structure of interleukin 6: implications for a novel mode of receptor dimerization and signaling.";
EMBO J. 16:989-997(1997).
[21]
INVOLVEMENT IN SUSCEPTIBILITY TO SYSTEMIC JUVENILE RHEUMATOID ARTHRITIS.
PubMed=9769329 [NCBI, ExPASy, EBI, Israel, Japan]
Fishman D., Faulds G., Jeffery R., Mohamed-Ali V., Yudkin J.S., Humphries S., Woo P.;
"The effect of novel polymorphisms in the interleukin-6 (IL-6) gene on IL-6 transcription and plasma IL-6 levels, and an association with systemic-onset juvenile chronic arthritis.";
J. Clin. Invest. 102:1369-1376(1998).
[22]
INVOLVEMENT IN SUSCEPTIBILITY TO KAPOSI SARCOMA.
PubMed=11001912 [NCBI, ExPASy, EBI, Israel, Japan]
Foster C.B., Lehrnbecher T., Samuels S., Stein S., Mol F., Metcalf J.A., Wyvill K., Steinberg S.M., Kovacs J., Blauvelt A., Yarchoan R., Chanock S.J.;
"An IL6 promoter polymorphism is associated with a lifetime risk of development of Kaposi sarcoma in men infected with human immunodeficiency virus.";
Blood 96:2562-2567(2000).
[23]
INVOLVEMENT IN BMD.
DOI=10.1007/s100380170077; PubMed=11355017 [NCBI, ExPASy, EBI, Israel, Japan]
Ota N., Nakajima T., Nakazawa I., Suzuki T., Hosoi T., Orimo H., Inoue S., Shirai Y., Emi M.;
"A nucleotide variant in the promoter region of the interleukin-6 gene associated with decreased bone mineral density.";
J. Hum. Genet. 46:267-272(2001).
[24]
INVOLVEMENT IN BMD.
DOI=10.1007/s10038-003-0020-8; PubMed=12768442 [NCBI, ExPASy, EBI, Israel, Japan]
Chung H.W., Seo J.-S., Hur S.E., Kim H.L., Kim J.Y., Jung J.H., Kim L.H., Park B.L., Shin H.D.;
"Association of interleukin-6 promoter variant with bone mineral density in pre-menopausal women.";
J. Hum. Genet. 48:243-248(2003).
Comments
  • FUNCTION: IL-6 is a cytokine with a wide variety of biological functions: it plays an essential role in the final differentiation of B-cells into Ig-secreting cells, it induces myeloma and plasmacytoma growth, it induces nerve cells differentiation, in hepatocytes it induces acute phase reactants.
  • SUBCELLULAR LOCATION: Secreted.
  • PTM: N- and O-glycosylated.
  • POLYMORPHISM: Genetic variations in IL6 may be correlated with bone mineral density (BMD). Low BMD is a risk factor for osteoporotic fracture. Osteoporosis is characterized by reduced bone mineral density, disrutption of bone microarchitecture, and the alteration of the amount and variety of non-collagenous proteins in bone. Osteoporotic bones are more at risk of fracture.
  • DISEASE: Genetic variations in IL6 are associated with susceptibility to systemic juvenile rheumatoid arthritis [MIM:604302]. Systemic juvenile rheumatoid arthritis is juvenile chronic arthritis associated with severe, debilitating, extraarticular features, and occasionally fatal complications. Despite medical treatment, many children still experience early joint destruction, necessitating surgical replacement.
  • DISEASE: At least 1 polymorphism in the IL6 gene renders HIV-infected men susceptible to Kaposi sarcoma [MIM:148000]. Kaposi sarcoma is a sarcoma of spindle cells mixed with angiomatous tissue. A relatively rare malignant skin tumor that results in multifocal purplish coloured papules or plaques that eventually form nodules. Most commonly seen in patients who suffer from AIDS.
  • SIMILARITY: Belongs to the IL-6 superfamily.
  • WEB RESOURCE: Name=R&D Systems' cytokine mini-reviews: IL-6; URL="http://www.rndsystems.com/molecule_detail.aspx?m=1648";.
  • WEB RESOURCE: Name=Wikipedia; Note=Interleukin-6 entry; URL="http://en.wikipedia.org/wiki/Interleukin_6";.
  • WEB RESOURCE: Name=SeattleSNPs; URL="http://pga.gs.washington.edu/data/il6/";.
  • WEB RESOURCE: Name=SHMPD; Note=The Singapore human mutation and polymorphism database; URL="http://shmpd.bii.a-star.edu.sg/gene.php?genestart=A&genename=IL6";.
  • WEB RESOURCE: Name=Atlas of Genetics and Cytogenetics in Oncology and Haematology; URL="http://atlasgeneticsoncology.org/Genes/IL6ID519ch7p15.html";.
Copyright
Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms. Distributed under the Creative Commons Attribution-NoDerivs License.
Cross-references
Sequence databases
EMBL
X04430; CAA28026.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M14584; AAA52728.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
X04602; CAA28268.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
Y00081; CAA68278.1; -; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M18403; AAA52729.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M29150; AAA59154.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
X04402; CAA27990.1; -; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
X04403; CAA27991.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M54894; AAC41704.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
S56892; AAD13886.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
AF372214; AAK48987.1; -; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
BC015511; AAH15511.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
PIR A32648; IVHUB2.
RefSeq NP_000591.1; -.
UniGene Hs.654458
3D structure databases
PDB
1ALU; X-ray; 1.90 A; A=28-212.[ExPASy / RCSB / EBI]
1IL6; NMR; -; A=28-212.[ExPASy / RCSB / EBI]
1N2Q; Model; -; E/F=30-212.[ExPASy / RCSB / EBI]
1P9M; X-ray; 3.65 A; B=29-212.[ExPASy / RCSB / EBI]
2IL6; NMR; -; A=28-212.[ExPASy / RCSB / EBI]
Detailed list of linked structures.
PDBsum 1ALU; -.
1IL6; -.
1N2Q; -.
1P9M; -.
2IL6; -.
ModBase P05231.
Protein-protein interaction databases
DIP DIP:482N; -.
IntAct P05231; -.
Organism-specific databases
H-InvDB HIX0006514; -.
HGNC HGNC:6018; IL6.
GenAtlas IL6.
MIM 147620; gene. [NCBI / EBI]
148000; phenotype. [NCBI / EBI]
604302; phenotype. [NCBI / EBI]
Orphanet 92; Arthritis, juvenile idiopathic.
PharmGKB PA198; -.
GeneCards P05231.
Gene expression databases
ArrayExpress P05231; -.
CleanEx HS_IL6; -.
GermOnline ENSG00000136244; Homo sapiens.
Ontologies
GO
GO:0005615; Cellular component: extracellular space (traceable author statement from ProtInc).
GO:0005138; Molecular function: interleukin-6 receptor binding (non-traceable author statement from UniProtKB).
GO:0007166; Biological process: cell surface receptor linked signal transduction (traceable author statement from ProtInc).
GO:0007267; Biological process: cell-cell signaling (non-traceable author statement from UniProtKB).
GO:0006959; Biological process: humoral immune response (traceable author statement from ProtInc).
GO:0006954; Biological process: inflammatory response (inferred from direct assay from UniProtKB).
GO:0043066; Biological process: negative regulation of apoptosis (inferred from direct assay from UniProtKB).
GO:0008285; Biological process: negative regulation of cell proliferation (traceable author statement from ProtInc).
GO:0045079; Biological process: negative regulation of chemokine biosynthetic process (inferred from sequence or structural similarity from UniProtKB).
GO:0001781; Biological process: neutrophil apoptosis (inferred from direct assay from UniProtKB).
GO:0008284; Biological process: positive regulation of cell proliferation (traceable author statement from ProtInc).
GO:0043410; Biological process: positive regulation of MAPKKK cascade (inferred from direct assay from MGI).
GO:0033138; Biological process: positive regulation of peptidyl-serine phosphorylation (inferred from direct assay from MGI).
GO:0050731; Biological process: positive regulation of peptidyl-tyrosine phosphorylation (inferred from direct assay from MGI).
GO:0045944; Biological process: positive regulation of transcription from RNA polymerase II promoter (inferred from direct assay from MGI).
GO:0045727; Biological process: positive regulation of translation (inferred from direct assay from UniProtKB).
GO:0051384; Biological process: response to glucocorticoid stimulus (inferred from direct assay from UniProtKB).
QuickGo view.
Family and domain databases
InterPro IPR012351; 4_helix_cytokine_core.
IPR003573; IL6_MGF_GCSF.
IPR003574; Interleukin_6.
Graphical view of domain structure.
Gene3D G3DSA:1.20.1250.10; 4_helix_cytokine_core; 1.
PANTHER PTHR11457; Interleukin_6; 1.
Pfam PF00489; IL6; 1.
Pfam graphical view of domain structure.
PIRSF PIRSF001935; IL6_MGF_GCSF; 1.
PRINTS PR00433; IL6GCSFMGF.
PR00434; INTERLEUKIN6.
SMART SM00126; IL6; 1.
SMART graphical view of domain structure.
PROSITE PS00254; INTERLEUKIN_6; 1.
BLOCKS P05231.
ProtoNet P05231.
Genome annotation databases
Ensembl ENSG00000136244; Homo sapiens. [Contig view]
GeneID 3569; -.
KEGG hsa:3569; -.
Phylogenomic databases
HOGENOM P05231; -.
HOVERGEN P05231; -.
Other
DrugBank DB01169; Arsenic trioxide.
DB01128; Bicalutamide.
DB01404; Ginseng.
DB00641; Simvastatin.
LinkHub P05231; -.
NextBio 13950; -.
SOURCE IL6; Homo sapiens.
UniRef View cluster of proteins with at least 50% / 90% / 100% identity.
Keywords
3D-structure; Acute phase; Cytokine; Direct protein sequencing; Glycoprotein; Growth factor; Polymorphism; Secreted; Signal.
Features
SEVIEWER logo Feature table viewer
KeyFrom   To Length Description FTId
SIGNAL   1    29  29      
CHAIN   30   212  183     Interleukin-6. PRO_0000015582
CARBOHYD   73    73        N-linked (GlcNAc...). 
DISULFID   72    78         
DISULFID   101   111         
VARIANT   32    32  1     P -> S (in dbSNP:rs2069830 [NCBI]). VAR_013075 
VARIANT   162   162  1     D -> E (in dbSNP:rs13306435 [NCBI]). VAR_029266 
VARIANT   162   162  1     D -> V (in dbSNP:rs2069860 [NCBI]). VAR_013076 
MUTAGEN   173   173        A->V: Almost no loss of activity. 
MUTAGEN   185   185        W->R: No loss of activity. 
MUTAGEN   204   204        S->P: 87% loss of activity. 
MUTAGEN   210   210        R->K,E,Q,T,A,P: Loss of activity. 
MUTAGEN   212   212        M->T,N,S,R: Loss of activity. 
HELIX   49    75  27      
HELIX   97    99  3      
HELIX   108   132  25      
HELIX   137   157  21      
STRAND   159   161  3      
HELIX   169   180  12      
HELIX   184   209  26      
Sequence information
Length: 212 AA [This is the length of the unprocessed precursor] Molecular weight: 23718 Da [This is the MW of the unprocessed precursor] CRC64: 1F1ED1FE1B734079 [This is a checksum on the sequence]
        10         20         30         40         50         60 
MNSFSTSAFG PVAFSLGLLL VLPAAFPAPV PPGEDSKDVA APHRQPLTSS ERIDKQIRYI 

        70         80         90        100        110        120 
LDGISALRKE TCNKSNMCES SKEALAENNL NLPKMAEKDG CFQSGFNEET CLVKIITGLL 

       130        140        150        160        170        180 
EFEVYLEYLQ NRFESSEEQA RAVQMSTKVL IQFLQKKAKN LDAITTPDPT TNASLLTKLQ 

       190        200        210 
AQNQWLQDMT THLILRSFKE FLQSSLRALR QM 

P05231 in FASTA format

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