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3o4o
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3o4o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3o4o OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3o4o RCSB], [http://www.ebi.ac.uk/pdbsum/3o4o PDBsum]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3o4o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3o4o OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3o4o RCSB], [http://www.ebi.ac.uk/pdbsum/3o4o PDBsum]</span></td></tr> | ||
</table> | </table> | ||
| + | == Function == | ||
| + | [[http://www.uniprot.org/uniprot/IL1B_HUMAN IL1B_HUMAN]] Produced by activated macrophages, IL-1 stimulates thymocyte proliferation by inducing IL-2 release, B-cell maturation and proliferation, and fibroblast growth factor activity. IL-1 proteins are involved in the inflammatory response, being identified as endogenous pyrogens, and are reported to stimulate the release of prostaglandin and collagenase from synovial cells.<ref>PMID:3920526</ref> [[http://www.uniprot.org/uniprot/IL1AP_HUMAN IL1AP_HUMAN]] Coreceptor with IL1R1. Associates with IL1R1 bound to IL1B to form the high affinity interleukin-1 receptor complex which mediates interleukin-1-dependent activation of NF-kappa-B and other pathways. Signaling involves the recruitment of adapter molecules such as TOLLIP, MYD88, and IRAK1 or IRAK2 via the respective TIR domains of the receptor/coreceptor subunits. Recruits TOLLIP to the signaling complex. Does not bind to interleukin-1 alone; binding of IL1RN to IL1R1, prevents its association with IL1R1 to form a signaling complex. The cellular response is modulated through a non-signaling association with the membrane IL1R2 decoy receptor. Secreted forms (isoforms 2 and 3) associate with secreted ligand-bound IL1R2 and increase the affinity of secreted IL1R2 for IL1B; this complex formation may be the dominant mechanism for neutralization of IL1B by secreted/soluble receptors.<ref>PMID:9371760</ref> <ref>PMID:10799889</ref> <ref>PMID:12530978</ref> [[http://www.uniprot.org/uniprot/IL1R2_HUMAN IL1R2_HUMAN]] Non-signaling receptor for IL1A, IL1B and IL1RN. Reduces IL1B activities. Serves as a decoy receptor by competetive binding to IL1B and preventing its binding to IL1R1. Also modulates cellular response through non-signaling association with IL1RAP after binding to IL1B. IL1R2 (membrane and secreted forms) preferentially binds IL1B and poorly IL1A and IL1RN. The secreted IL1R2 recruits secreted IL1RAP with high affinity; this complex formation may be the dominant mechanism for neutralization of IL1B by secreted/soluble receptors.<ref>PMID:10975853</ref> <ref>PMID:12530978</ref> <ref>PMID:7989776</ref> <ref>PMID:9862719</ref> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Revision as of 06:46, 25 December 2014
Crystal structure of an Interleukin-1 receptor complex
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