5m57
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==Nek2 bound to arylaminopurine 6== | |
| + | <StructureSection load='5m57' size='340' side='right' caption='[[5m57]], [[Resolution|resolution]] 2.30Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[5m57]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5M57 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5M57 FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=4SP:O6-CYCLOHEXYLMETHOXY-2-(4-SULPHAMOYLANILINO)+PURINE'>4SP</scene></td></tr> | ||
| + | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Non-specific_serine/threonine_protein_kinase Non-specific serine/threonine protein kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.1 2.7.11.1] </span></td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5m57 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5m57 OCA], [http://pdbe.org/5m57 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5m57 RCSB], [http://www.ebi.ac.uk/pdbsum/5m57 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5m57 ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [[http://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 == | ||
| + | Nek2 (NIMA-related kinase 2) is a cell cycle-dependent serine/threonine protein kinase that regulates centrosome separation at the onset of mitosis. Overexpression of Nek2 is common in human cancers and suppression can restrict tumor cell growth and promote apoptosis. Nek2 inhibition with small molecules, therefore, offers the prospect of a new therapy for cancer. To achieve this goal, a better understanding of the requirements for selective-inhibition of Nek2 is required. 6-Alkoxypurines were identified as ATP-competitive inhibitors of Nek2 and CDK2. Comparison with CDK2-inhibitor structures indicated that judicious modification of the 6-alkoxy and 2-arylamino substituents could achieve discrimination between Nek2 and CDK2. In this study, a library of 6-cyclohexylmethoxy-2-arylaminopurines bearing carboxamide, sulfonamide and urea substituents on the 2-arylamino ring was synthesized. Few of these compounds were selective for Nek2 over CDK2, with the best result being obtained for 3-((6-(cyclohexylmethoxy)-9H-purin-2-yl)amino)-N,N-dimethylbenzamide (CDK2 IC50 = 7.0 muM; Nek2 IC50 = 0.62 muM) with >10-fold selectivity. Deletion of the 6-substituent abrogated activity against both Nek2 and CDK2. Nine compounds containing an (E)-dialkylaminovinyl substituent at C-6, all showed selectivity for Nek2, e.g. (E)-6-(2-(azepan-1-yl)vinyl)-N-phenyl-9H-purin-2-amine (CDK2 IC50 = 2.70 muM; Nek2 IC50 = 0.27 muM). Structural biology of selected compounds enabled a partial rationalization of the observed structure activity relationships and mechanism of Nek2 activation. This showed that carboxamide 11 is the first reported inhibitor of Nek2 in the DFG-in conformation. | ||
| - | + | Structure-guided design of purine-based probes for selective Nek2 inhibition.,Coxon CR, Wong C, Bayliss R, Boxall K, Carr KH, Fry AM, Hardcastle IR, Matheson CJ, Newell DR, Sivaprakasam M, Thomas H, Turner D, Yeoh S, Wang LZ, Griffin RJ, Golding BT, Cano C Oncotarget. 2016 Nov 9. doi: 10.18632/oncotarget.13249. PMID:27833088<ref>PMID:27833088</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| + | <div class="pdbe-citations 5m57" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Non-specific serine/threonine protein kinase]] | ||
[[Category: Bayliss, R]] | [[Category: Bayliss, R]] | ||
| + | [[Category: Centrosome separation]] | ||
| + | [[Category: Inhibitor]] | ||
| + | [[Category: Protein kinase]] | ||
| + | [[Category: Transferase]] | ||
Revision as of 10:57, 10 December 2016
Nek2 bound to arylaminopurine 6
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