View source for 9na3


==IRAK4 in Complex with Compound 15==
<StructureSection load='9na3' size='340' side='right'caption='[[9na3]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[9na3]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9NA3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9NA3 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=A1BWX:6-(3-cyanopyrrolo[1,2-b]pyridazin-7-yl)-~{N}-[(2~{R})-2-fluoranyl-3-methyl-3-oxidanyl-butyl]-4-[(4-oxidanyl-1-bicyclo[2.2.2]octanyl)amino]pyridine-3-carboxamide'>A1BWX</scene>, <scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</scene>, <scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=9na3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9na3 OCA], [https://pdbe.org/9na3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9na3 RCSB], [https://www.ebi.ac.uk/pdbsum/9na3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9na3 ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/IRAK4_HUMAN IRAK4_HUMAN] Defects in IRAK4 are the cause of recurrent isolated invasive pneumococcal disease type 1 (IPD1) [MIM:[https://omim.org/entry/610799 610799]. Recurrent invasive pneumococcal disease (IPD) is defined as two episodes of IPD occurring at least 1 month apart, whether caused by the same or different serotypes or strains. Recurrent IPD occurs in at least 2% of patients in most series, making IPD the most important known risk factor for subsequent IPD.<ref>PMID:16950813</ref>   Defects in IRAK4 are the cause of IRAK4 deficiency (IRAK4D) [MIM:[https://omim.org/entry/607676 607676]. IRAK4 deficiency causes extracellular pyogenic bacterial and fungal infections in otherwise healthy children.<ref>PMID:12925671</ref> <ref>PMID:12637671</ref> 
== Function ==
[https://www.uniprot.org/uniprot/IRAK4_HUMAN IRAK4_HUMAN] Serine/threonine-protein kinase that plays a critical role in initiating innate immune response against foreign pathogens. Involved in Toll-like receptor (TLR) and IL-1R signaling pathways. Is rapidly recruited by MYD88 to the receptor-signaling complex upon TLR activation to form the Myddosome together with IRAK2. Phosphorylates initially IRAK1, thus stimulating the kinase activity and intensive autophosphorylation of IRAK1. Phosphorylates E3 ubiquitin ligases Pellino proteins (PELI1, PELI2 and PELI3) to promote pellino-mediated polyubiquitination of IRAK1. Then, the ubiquitin-binding domain of IKBKG/NEMO binds to polyubiquitinated IRAK1 bringing together the IRAK1-MAP3K7/TAK1-TRAF6 complex and the NEMO-IKKA-IKKB complex. In turn, MAP3K7/TAK1 activates IKKs (CHUK/IKKA and IKBKB/IKKB) leading to NF-kappa-B nuclear translocation and activation. Alternatively, phosphorylates TIRAP to promote its ubiquitination and subsequent degradation. Phosphorylates NCF1 and regulates NADPH oxidase activation after LPS stimulation suggesting a similar mechanism during microbial infections.<ref>PMID:11960013</ref> <ref>PMID:12538665</ref> <ref>PMID:15084582</ref> <ref>PMID:17217339</ref> <ref>PMID:17337443</ref> <ref>PMID:17997719</ref> <ref>PMID:20400509</ref> 
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== Publication Abstract from PubMed ==
Interleukin-1 receptor-associated kinase 4 (IRAK4) activity mediates pro-inflammatory signaling and cytokine production downstream of toll-like and interleukin-1 receptors (TLR, IL-1R). Selective IRAK4 inhibitors have generated interest as potential treatments for inflammatory diseases. Herein, we report the discovery of GS-5718 (edecesertib), a potent, selective, orally bioavailable IRAK4 inhibitor. Key to this endeavor were efforts undertaken to improve the chemical series' profile after a significant hERG liability was encountered for an early compound. GS-5718 was safe and well-tolerated in IND-enabling preclinical animal toxicity studies, demonstrated efficacy in a mouse NZB lupus model, and additionally demonstrated human pharmacokinetic properties suitable for once-daily administration. Edecesertib is currently under clinical evaluation for the treatment of lupus.

Discovery of Edecesertib (GS-5718): A Potent, Selective Inhibitor of IRAK4.,Ammann SE, Cottell JJ, Wright NE, Warr MR, Snyder CA, Bacon EM, Brizgys G, Chin E, Chou C, Conway A, Dick RA, Ferrao RD, Garrison KL, Hammond A, Lansdon EB, Link JO, Mukherjee PK, Murray BP, Mwangi J, Ndukwe MS, Park GY, Serone AP, Suekawa-Pirrone K, Yang ZY, Zipfel SM, Taylor JG J Med Chem. 2025 May 15. doi: 10.1021/acs.jmedchem.5c00463. PMID:40375634<ref>PMID:40375634</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 9na3" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Ferrao R]]
[[Category: Lansdon EB]]