View source for 3d5u


==Crystal structure of a wildtype Polo-like kinase 1 (Plk1) catalytic domain.==
<StructureSection load='3d5u' size='340' side='right'caption='[[3d5u]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3d5u]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Danio_rerio Danio rerio]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3D5U OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3D5U 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]] 2.8&#8491;</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=3d5u FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3d5u OCA], [https://pdbe.org/3d5u PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3d5u RCSB], [https://www.ebi.ac.uk/pdbsum/3d5u PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3d5u ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q6DRK7_DANRE Q6DRK7_DANRE] 
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/d5/3d5u_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3d5u ConSurf].
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== Publication Abstract from PubMed ==
Polo-like kinase 1 (Plk1) is a member of a family of serine/threonine kinases involved in the regulation of cell-cycle progression and cytokinesis and is an attractive target for the development of anticancer therapeutics. A zebrafish homolog of the human Plk1 (hPlk1) kinase domain (KD) was identified that can be expressed in large quantities in bacteria and crystallizes readily, whether in a wild-type form or as a variant containing the activating Thr196--&gt;Asp substitution, in one space group and under similar conditions both in the absence and presence of active-site compounds. This construct was validated by testing a panel of hPlk1 inhibitors against human and zebrafish proteins and it was shown that the selected small molecules inhibited the homologs with a high degree of correlation. Crystal structures of ligand-free wild-type and activated zebrafish Plk1 (zPlk1) KDs revealed the organization of the secondary structural elements around the active site and demonstrated that the activation segment was disordered in the activated form of the domain but possessed a well defined secondary structure in the wild-type enzyme. The cocrystal structure of wild-type zPlk1 KD with ADP documented the hydrolysis of ATP and revealed the phosphorylation site. The cocrystal structure of the activated KD with wortmannin, a covalent inhibitor of Plk1 and PI3 kinases, showed the binding mode of the small molecule to the enzyme and may facilitate the design of more potent Plk1 inhibitors. The work presented in this study establishes the zPlk1 KD as a useful tool for rapid low- and high-throughput structure-based screening and drug discovery of compounds specific for this mitotic target.

Structures of the wild-type and activated catalytic domains of Brachydanio rerio Polo-like kinase 1 (Plk1): changes in the active-site conformation and interactions with ligands.,Elling RA, Fucini RV, Romanowski MJ Acta Crystallogr D Biol Crystallogr. 2008 Sep;64(Pt 9):909-18. Epub 2008, Aug 13. PMID:18703838<ref>PMID:18703838</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 3d5u" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Danio rerio]]
[[Category: Large Structures]]
[[Category: Elling RA]]
[[Category: Fucini RV]]
[[Category: Romanowski MJ]]