View source for 8xpg


==The Crystal Structure of polo box domain of Plk4 from Biortus.==
<StructureSection load='8xpg' size='340' side='right'caption='[[8xpg]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8xpg]] 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=8XPG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8XPG 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]] 2.7&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=8xpg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8xpg OCA], [https://pdbe.org/8xpg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8xpg RCSB], [https://www.ebi.ac.uk/pdbsum/8xpg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8xpg ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PLK4_HUMAN PLK4_HUMAN] Serine/threonine-protein kinase that plays a central role in centriole duplication. Able to trigger procentriole formation on the surface of the parental centriole cylinder, leading to the recruitment of centriole biogenesis proteins such as SASS6, CENPJ/CPAP, CCP110, CEP135 and gamma-tubulin. When overexpressed, it is able to induce centrosome amplification through the simultaneous generation of multiple procentrioles adjoining each parental centriole during S phase. Phosphorylates 'Ser-151' of FBXW5 during the G1/S transition, leading to inhibit FBXW5 ability to ubiquitinate SASS6. Its central role in centriole replication suggests a possible role in tumorigenesis, centrosome aberrations being frequently observed in tumors. Also involved in trophoblast differentiation by phosphorylating HAND1, leading to disrupt the interaction between HAND1 and MDFIC and activate HAND1. Phosphorylates CDC25C and CHEK2.<ref>PMID:16326102</ref> <ref>PMID:16244668</ref> <ref>PMID:17681131</ref> <ref>PMID:18239451</ref> <ref>PMID:19164942</ref> <ref>PMID:21725316</ref> 
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Cheng W]]
[[Category: Lv Z]]
[[Category: Meng Q]]
[[Category: Wang F]]
[[Category: Zhang B]]