View source for 4nzw


==Crystal Structure of STK25-MO25 Complex==
<StructureSection load='4nzw' size='340' side='right'caption='[[4nzw]], [[Resolution|resolution]] 3.58&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4nzw]] 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=4NZW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4NZW 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]] 3.583&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=J60:5-[(E)-(5-CHLORO-2-OXO-1,2-DIHYDRO-3H-INDOL-3-YLIDENE)METHYL]-N-[2-(DIETHYLAMINO)ETHYL]-2,4-DIMETHYL-1H-PYRROLE-3-CARBOXAMIDE'>J60</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=4nzw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4nzw OCA], [https://pdbe.org/4nzw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4nzw RCSB], [https://www.ebi.ac.uk/pdbsum/4nzw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4nzw ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/STK25_HUMAN STK25_HUMAN] Oxidant stress-activated serine/threonine kinase that may play a role in the response to environmental stress. Targets to the Golgi apparatus where it appears to regulate protein transport events, cell adhesion, and polarity complexes important for cell migration.<ref>PMID:15037601</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The tumor suppressor kinase LKB1 and germinal center kinases (GCKs) are key regulators of various cellular functions. The adaptor molecule MO25 not only recruits and activates LKB1 through the pseudokinase STRAD, but also may directly activate GCKs like MST3, MST4, STK25, OSR1 and SPAK. Targeting MO25 in a pathological setting has been recently studied in mouse. Yet the regulatory mechanism of MO25-mediated kinase activation is not fully understood. Here, our structural studies of MO25-related kinases reveal that MO25 binds to and activates GCK kinases or pseudokinase through a unified structural mechanism, featuring an active conformation of the alphaC helix and A-loop stabilized by MO25. Compared to GCKs that are directly activated by MO25-binding, activation of LKB1 has evolved additional layer of regulatory machinery, i.e., MO25 "activates" the pseudokinase STRAD, which in turn activates LKB1. Importantly, the structures of MO25alpha-STK25 and MO25alpha-MST3 determined in this work represent a transition/intermediate state and a fully activated state, respectively during the MO25-mediated kinase activating process.

Structural insights into regulatory mechanisms of MO25-mediated kinase activation.,Hao Q, Feng M, Shi Z, Li C, Chen M, Wang W, Zhang M, Jiao S, Zhou Z J Struct Biol. 2014 May;186(2):224-33. doi: 10.1016/j.jsb.2014.04.005. Epub 2014 , Apr 16. PMID:24746913<ref>PMID:24746913</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4nzw" 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: Feng M]]
[[Category: Hao Q]]
[[Category: Zhou ZC]]