View source for 7kyk


==Crystal structure of Plasmodium falciparum dihydroorotate dehydrogenase bound with Inhibitor DSM589 (ethyl 3-methyl-4-((4-(trifluoromethyl)benzo[d]oxazol-7-yl)methyl)-1H-pyrrole-2-carboxylate)==
<StructureSection load='7kyk' size='340' side='right'caption='[[7kyk]], [[Resolution|resolution]] 2.15&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7kyk]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Plasmodium_falciparum_3D7 Plasmodium falciparum 3D7]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7KYK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7KYK 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]] 2.15&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=ORO:OROTIC+ACID'>ORO</scene>, <scene name='pdbligand=XAJ:ethyl+3-methyl-4-{[4-(trifluoromethyl)-1,3-benzoxazol-7-yl]methyl}-1H-pyrrole-2-carboxylate'>XAJ</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=7kyk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7kyk OCA], [https://pdbe.org/7kyk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7kyk RCSB], [https://www.ebi.ac.uk/pdbsum/7kyk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7kyk ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PYRD_PLAF7 PYRD_PLAF7] Catalyzes the conversion of dihydroorotate to orotate with quinone as electron acceptor.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Dihydroorotate dehydrogenase (DHODH) has been clinically validated as a target for the development of new antimalarials. Experience with clinical candidate triazolopyrimidine DSM265 (1) suggested that DHODH inhibitors have great potential for use in prophylaxis, which represents an unmet need in the malaria drug discovery portfolio for endemic countries, particularly in areas of high transmission in Africa. We describe a structure-based computationally driven lead optimization program of a pyrrole-based series of DHODH inhibitors, leading to the discovery of two candidates for potential advancement to preclinical development. These compounds have improved physicochemical properties over prior series frontrunners and they show no time-dependent CYP inhibition, characteristic of earlier compounds. Frontrunners have potent antimalarial activity in vitro against blood and liver schizont stages and show good efficacy in Plasmodium falciparum SCID mouse models. They are equally active against P. falciparum and Plasmodium vivax field isolates and are selective for Plasmodium DHODHs versus mammalian enzymes.

Potent Antimalarials with Development Potential Identified by Structure-Guided Computational Optimization of a Pyrrole-Based Dihydroorotate Dehydrogenase Inhibitor Series.,Palmer MJ, Deng X, Watts S, Krilov G, Gerasyuto A, Kokkonda S, El Mazouni F, White J, White KL, Striepen J, Bath J, Schindler KA, Yeo T, Shackleford DM, Mok S, Deni I, Lawong A, Huang A, Chen G, Wang W, Jayaseelan J, Katneni K, Patil R, Saunders J, Shahi SP, Chittimalla R, Angulo-Barturen I, Jimenez-Diaz MB, Wittlin S, Tumwebaze PK, Rosenthal PJ, Cooper RA, Aguiar ACC, Guido RVC, Pereira DB, Mittal N, Winzeler EA, Tomchick DR, Laleu B, Burrows JN, Rathod PK, Fidock DA, Charman SA, Phillips MA J Med Chem. 2021 May 13;64(9):6085-6136. doi: 10.1021/acs.jmedchem.1c00173. Epub , 2021 Apr 20. PMID:33876936<ref>PMID:33876936</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7kyk" style="background-color:#fffaf0;"></div>

==See Also==
*[[Dihydroorotate dehydrogenase 3D structures|Dihydroorotate dehydrogenase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Plasmodium falciparum 3D7]]
[[Category: Deng X]]
[[Category: Phillips M]]
[[Category: Tomchick D]]