View source for 4eop


==Thr 160 phosphorylated CDK2 Q131E - human cyclin A3 complex with the inhibitor RO3306==
<StructureSection load='4eop' size='340' side='right'caption='[[4eop]], [[Resolution|resolution]] 1.99&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4eop]] is a 4 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=4EOP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4EOP 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]] 1.99&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=1RO:(5E)-5-(QUINOLIN-6-YLMETHYLIDENE)-2-[(THIOPHEN-2-YLMETHYL)AMINO]-1,3-THIAZOL-4(5H)-ONE'>1RO</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SGM:MONOTHIOGLYCEROL'>SGM</scene>, <scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</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=4eop FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4eop OCA], [https://pdbe.org/4eop PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4eop RCSB], [https://www.ebi.ac.uk/pdbsum/4eop PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4eop ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Cdk2 promotes DNA replication and is a promising cancer therapeutic target, but its functions appear redundant with Cdk1, an essential Cdk affected by most Cdk2 inhibitors. Here, we present an integrated multidisciplinary approach to address Cdk redundancy. Mathematical modeling of enzymology data predicted conditions allowing selective chemical Cdk2 inhibition. Together with experiments in Xenopus egg extracts, this supports a rate-limiting role for Cdk2 in DNA replication. To confirm this we designed inhibitor-resistant (ir)-Cdk2 mutants using a novel bioinformatics approach. Bypassing inhibition with ir-Cdk2 or with Cdk1 shows that Cdk2 is rate-limiting for replication in this system because Cdk1 is insufficiently active. Additionally, crystal structures and kinetics reveal alternative binding modes of Cdk1-selective and Cdk2-selective inhibitors and mechanisms of Cdk2 inhibitor resistance. Our approach thus provides insight into structure, functions, and biochemistry of a cyclin-dependent kinase.

An integrated chemical biology approach provides insight into Cdk2 functional redundancy and inhibitor sensitivity.,Echalier A, Cot E, Camasses A, Hodimont E, Hoh F, Jay P, Sheinerman F, Krasinska L, Fisher D Chem Biol. 2012 Aug 24;19(8):1028-40. doi: 10.1016/j.chembiol.2012.06.015. PMID:22921070<ref>PMID:22921070</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4eop" style="background-color:#fffaf0;"></div>

==See Also==
*[[Cyclin 3D structures|Cyclin 3D structures]]
*[[Cyclin-dependent kinase 3D structures|Cyclin-dependent kinase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Camasses A]]
[[Category: Cot E]]
[[Category: Echalier A]]
[[Category: Fisher D]]
[[Category: Hodimont E]]
[[Category: Hoh F]]
[[Category: Krasinska L]]
[[Category: Sheinerman F]]