View source for 6zjf


==Crystal structure of STK17B (DRAK2) in complex with AP-229==
<StructureSection load='6zjf' size='340' side='right'caption='[[6zjf]], [[Resolution|resolution]] 1.75&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6zjf]] 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=6ZJF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6ZJF 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]] 1.75&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=QM2:2-[6-(4-cyclopropylphenyl)thieno[3,2-d]pyrimidin-4-yl]sulfanylethanoic+acid'>QM2</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=6zjf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6zjf OCA], [https://pdbe.org/6zjf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6zjf RCSB], [https://www.ebi.ac.uk/pdbsum/6zjf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6zjf ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ST17B_HUMAN ST17B_HUMAN] Phosphorylates myosin light chains (By similarity). Acts as a positive regulator of apoptosis.<ref>PMID:9786912</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
STK17B is a member of the death-associated protein kinase family and has been genetically linked to the development of diverse diseases. However, the role of STK17B in normal and disease pathology is poorly defined. Here, we present the discovery of thieno[3,2-d] pyrimidine SGC-STK17B-1 (11s), a high-quality chemical probe for this understudied "dark" kinase. 11s is an ATP-competitive inhibitor that showed remarkable selectivity over other kinases including the closely related STK17A. X-ray crystallography of 11s and related thieno[3,2-d]pyrimidines bound to STK17B revealed a unique P-loop conformation characterized by a salt bridge between R41 and the carboxylic acid of the inhibitor. Molecular dynamic simulations of STK17B revealed the flexibility of the P-loop and a wide range of R41 conformations available to the apo-protein. The isomeric thieno[2,3-d]pyrimidine SGC-STK17B-1N (19g) was identified as a negative control compound. The &gt;100-fold lower activity of 19g on STK17B was attributed to the reduced basicity of its pyrimidine N1.

A Chemical Probe for Dark Kinase STK17B Derives Its Potency and High Selectivity through a Unique P-Loop Conformation.,Picado A, Chaikuad A, Wells CI, Shrestha S, Zuercher WJ, Pickett JE, Kwarcinski FE, Sinha P, de Silva CS, Zutshi R, Liu S, Kannan N, Knapp S, Drewry DH, Willson TM J Med Chem. 2020 Dec 10;63(23):14626-14646. doi: 10.1021/acs.jmedchem.0c01174., Epub 2020 Nov 20. PMID:33215924<ref>PMID:33215924</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6zjf" 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: Chaikuad A]]
[[Category: Knapp S]]
[[Category: Picado A]]
[[Category: Willson T]]