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| - | ==Monoclinic Complex Structure of Protein Kinase CK2 Catalytic Subunit with a Benzotriazole-Based Inhibitor Generated by click-chemistry==
| + | #REDIRECT [[5cqu]] This PDB entry is obsolete and replaced by 5cqu |
| - | <StructureSection load='4bxb' size='340' side='right' caption='[[4bxb]], [[Resolution|resolution]] 2.35Å' scene=''>
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| - | == Structural highlights ==
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| - | <table><tr><td colspan='2'>[[4bxb]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4BXB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4BXB FirstGlance]. <br>
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| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=JRJ:4-[4-[2-[4,5,6,7-TETRAKIS(BROMANYL)BENZOTRIAZOL-2-YL]ETHYL]-1,2,3-TRIAZOL-1-YL]BUTAN-1-AMINE'>JRJ</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4bxa|4bxa]]</td></tr>
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| - | <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>
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| - | <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=4bxb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4bxb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4bxb RCSB], [http://www.ebi.ac.uk/pdbsum/4bxb PDBsum]</span></td></tr>
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| - | </table>
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| - | == Function ==
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| - | [[http://www.uniprot.org/uniprot/CSK21_HUMAN CSK21_HUMAN]] Catalytic subunit of a constitutively active serine/threonine-protein kinase complex that phosphorylates a large number of substrates containing acidic residues C-terminal to the phosphorylated serine or threonine. Regulates numerous cellular processes, such as cell cycle progression, apoptosis and transcription, as well as viral infection. May act as a regulatory node which integrates and coordinates numerous signals leading to an appropriate cellular response. During mitosis, functions as a component of the p53/TP53-dependent spindle assembly checkpoint (SAC) that maintains cyclin-B-CDK1 activity and G2 arrest in response to spindle damage. Also required for p53/TP53-mediated apoptosis, phosphorylating 'Ser-392' of p53/TP53 following UV irradiation. Can also negatively regulate apoptosis. Phosphorylates the caspases CASP9 and CASP2 and the apoptotic regulator NOL3. Phosphorylation protects CASP9 from cleavage and activation by CASP8, and inhibits the dimerization of CASP2 and activation of CASP8. Regulates transcription by direct phosphorylation of RNA polymerases I, II, III and IV. Also phosphorylates and regulates numerous transcription factors including NF-kappa-B, STAT1, CREB1, IRF1, IRF2, ATF1, SRF, MAX, JUN, FOS, MYC and MYB. Phosphorylates Hsp90 and its co-chaperones FKBP4 and CDC37, which is essential for chaperone function. Regulates Wnt signaling by phosphorylating CTNNB1 and the transcription factor LEF1. Acts as an ectokinase that phosphorylates several extracellular proteins. During viral infection, phosphorylates various proteins involved in the viral life cycles of EBV, HSV, HBV, HCV, HIV, CMV and HPV.<ref>PMID:11239457</ref> <ref>PMID:11704824</ref> <ref>PMID:16193064</ref> <ref>PMID:19188443</ref>
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| - | <div style="background-color:#fffaf0;">
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| - | == Publication Abstract from PubMed ==
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| - | New 4,5,6,7-tetrabromo benzotriazole derivatives have been synthesized, and their activities against CK2 have been tested. A click chemistry approach based on the copper-catalyzed azide-alkyne cycloaddition has been utilized to connect benzotriazoles, which efficiently interact with the ATP-binding site, to other subunits designed to simultaneously bind to the active and the substrate-binding sites of the enzyme. Docking studies allowed us to identify key interactions between CK2 and the designed ligands, which will be useful to optimize this series of multisite-directed inhibitors.
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| - | Multisite-directed inhibitors of protein kinase CK2: new challenges.,Swider R, Maslyk M, Martin-Santamaria S, Ramos A, de Pascual-Teresa B Mol Cell Biochem. 2011 Oct;356(1-2):117-9. doi: 10.1007/s11010-011-0962-7. Epub, 2011 Jul 13. PMID:21750979<ref>PMID:21750979</ref>
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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| - | </div>
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| - | == References ==
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| - | <references/>
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| - | __TOC__
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| - | </StructureSection>
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| - | [[Category: Non-specific serine/threonine protein kinase]]
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| - | [[Category: Martin-Santamiaria, S]]
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| - | [[Category: Maslyk, M]]
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| - | [[Category: Niefind, K]]
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| - | [[Category: Panchuk, R]]
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| - | [[Category: Pascual-Teresa, B de]]
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| - | [[Category: Ramos, A]]
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| - | [[Category: Schnitzler, A]]
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| - | [[Category: Skorokhyd, N]]
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| - | [[Category: Swider, R]]
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| - | [[Category: Atp-competitive inhibitor]]
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| - | [[Category: Transferase]]
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