View source for 7b31


==MST3 in complex with compound MRIA9==
<StructureSection load='7b31' size='340' side='right'caption='[[7b31]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7b31]] is a 1 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=7B31 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7B31 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]] 1.8&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SQ8:1-[(5-azanyl-1,3-dioxan-2-yl)methyl]-3-[2-chloranyl-4-(3-fluoranylpyridin-2-yl)phenyl]-7-(methylamino)-1,6-naphthyridin-2-one'>SQ8</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=7b31 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7b31 OCA], [https://pdbe.org/7b31 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7b31 RCSB], [https://www.ebi.ac.uk/pdbsum/7b31 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7b31 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/STK24_HUMAN STK24_HUMAN] Serine/threonine-protein kinase that acts on both serine and threonine residues and promotes apoptosis in response to stress stimuli and caspase activation. Mediates oxidative-stress-induced cell death by modulating phosphorylation of JNK1-JNK2 (MAPK8 and MAPK9), p38 (MAPK11, MAPK12, MAPK13 and MAPK14) during oxidative stress. Plays a role in a staurosporine-induced caspase-independent apoptotic pathway by regulating the nuclear translocation of AIFM1 and ENDOG and the DNase activity associated with ENDOG. Phosphorylates STK38L on 'Thr-442' and stimulates its kinase activity. Regulates cellular migration with alteration of PTPN12 activity and PXN phosphorylation: phosphorylates PTPN12 and inhibits its activity and may regulate PXN phosphorylation through PTPN12. May act as a key regulator of axon regeneration in the optic nerve and radial nerve.<ref>PMID:16314523</ref> <ref>PMID:17046825</ref> <ref>PMID:19604147</ref> <ref>PMID:19855390</ref> <ref>PMID:19782762</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Salt-inducible kinases (SIKs) are key metabolic regulators. The imbalance in SIK function is associated with the development of diverse cancers, including breast, gastric, and ovarian cancers. Chemical tools to clarify the roles of SIK in different diseases are, however, sparse and are generally characterized by poor kinome-wide selectivity. Here, we have adapted the pyrido[2,3-d]pyrimidin-7-one-based p21-activated kinase (PAK) inhibitor G-5555 for the targeting of SIK, by exploiting differences in the back-pocket region of these kinases. Optimization was supported by high-resolution crystal structures of G-5555 bound to the known off-targets, MST3 and MST4, leading to a chemical probe, MRIA9, with dual SIK/PAK activity and excellent selectivity over other kinases. Furthermore, we show that MRIA9 sensitizes ovarian cancer cells to treatment with the mitotic agent paclitaxel, confirming earlier data from genetic knockdown studies and suggesting a combination therapy with SIK inhibitors and paclitaxel for the treatment of paclitaxel-resistant ovarian cancer.

Structure-Based Design of Selective Salt-Inducible Kinase Inhibitors.,Tesch R, Rak M, Raab M, Berger LM, Kronenberger T, Joerger AC, Berger BT, Abdi I, Hanke T, Poso A, Strebhardt K, Sanhaji M, Knapp S J Med Chem. 2021 Jun 24;64(12):8142-8160. doi: 10.1021/acs.jmedchem.0c02144. Epub, 2021 Jun 4. PMID:34086472<ref>PMID:34086472</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7b31" style="background-color:#fffaf0;"></div>

==See Also==
*[[Serine/threonine protein kinase 3D structures|Serine/threonine protein kinase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Joerger AC]]
[[Category: Knapp S]]
[[Category: Rak M]]
[[Category: Tesch R]]