View source for 2xk8


==Structure of Nek2 bound to aminopyrazine compound 15==
<StructureSection load='2xk8' size='340' side='right'caption='[[2xk8]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2xk8]] 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=2XK8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2XK8 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]] 2.001&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=5R1:4-[3-AMINO-6-(3,4,5-TRIMETHOXYPHENYL)PYRAZIN-2-YL]-2-METHOXYBENZOIC+ACID'>5R1</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</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=2xk8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2xk8 OCA], [https://pdbe.org/2xk8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2xk8 RCSB], [https://www.ebi.ac.uk/pdbsum/2xk8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2xk8 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/NEK2_HUMAN NEK2_HUMAN] Protein kinase which is involved in the control of centrosome separation and bipolar spindle formation in mitotic cells and chromatin condensation in meiotic cells. Regulates centrosome separation (essential for the formation of bipolar spindles and high-fidelity chromosome separation) by phosphorylating centrosomal proteins such as CROCC, CEP250 and NINL, resulting in their displacement from the centrosomes. Regulates kinetochore microtubule attachment stability in mitosis via phosphorylation of NDC80. Involved in regulation of mitotic checkpoint protein complex via phosphorylation of CDC20 and MAD2L1. Plays an active role in chromatin condensation during the first meiotic division through phosphorylation of HMGA2. Phosphorylates: PPP1CC; SGOL1; NECAB3 and NPM1. Essential for localization of MAD2L1 to kinetochore and MAPK1 and NPM1 to the centrosome. Isoform 1 phosphorylates and activates NEK11 in G1/S-arrested cells. Isoform 2, which is not present in the nucleolus, does not.<ref>PMID:11742531</ref> <ref>PMID:14978040</ref> <ref>PMID:12857871</ref> <ref>PMID:15358203</ref> <ref>PMID:15388344</ref> <ref>PMID:15161910</ref> <ref>PMID:17283141</ref> <ref>PMID:17621308</ref> <ref>PMID:17626005</ref> <ref>PMID:18086858</ref> <ref>PMID:18297113</ref> <ref>PMID:20034488</ref> <ref>PMID:21076410</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
We report herein the first systematic exploration of inhibitors of the mitotic kinase Nek2. Starting from HTS hit aminopyrazine 2, compounds with improved activity were identified using structure-based design. Our structural biology investigations reveal two notable observations. First, 2 and related compounds bind to an unusual, inactive conformation of the kinase which to the best of our knowledge has not been reported for other types of kinase inhibitors. Second, a phenylalanine residue at the center of the ATP pocket strongly affects the ability of the inhibitor to bind to the protein. The implications of these observations are discussed, and the work described here defines key features for potent and selective Nek2 inhibition, which will aid the identification of more advanced inhibitors of Nek2.

Aminopyrazine Inhibitors Binding to an Unusual Inactive Conformation of the Mitotic Kinase Nek2: SAR and Structural Characterization.,Whelligan DK, Solanki S, Taylor D, Thomson DW, Cheung KM, Boxall K, Mas-Droux C, Barillari C, Burns S, Grummitt CG, Collins I, van Montfort RL, Aherne GW, Bayliss R, Hoelder S J Med Chem. 2010 Oct 11. PMID:20936789<ref>PMID:20936789</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2xk8" 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: Bayliss R]]
[[Category: Mas-Droux C]]