View source for 4cku


==Three dimensional structure of plasmepsin II in complex with hydroxyethylamine-based inhibitor==
<StructureSection load='4cku' size='340' side='right'caption='[[4cku]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4cku]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Plasmodium_falciparum Plasmodium falciparum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4CKU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4CKU 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]] 1.85&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=P2F:5-[1,1-BIS(OXIDANYLIDENE)-1,2-THIAZINAN-2-YL]-N3-[(2S,3R)-4-[2-(3-METHOXYPHENYL)PROPAN-2-YLAMINO]-3-OXIDANYL-1-PHENYL-BUTAN-2-YL]-N1,N1-DIPROPYL-BENZENE-1,3-DICARBOXAMIDE'>P2F</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=4cku FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4cku OCA], [https://pdbe.org/4cku PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4cku RCSB], [https://www.ebi.ac.uk/pdbsum/4cku PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4cku ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PLM2_PLAFX PLM2_PLAFX] During the asexual blood stage, participates in initial cleavage of native host hemoglobin (Hb) resulting in Hb denaturation (PubMed:11782538, PubMed:15574427, PubMed:8844673). May cleave preferentially denatured hemoglobin that has been cleaved by PMI (PubMed:8844673). Digestion of host Hb is an essential step which provides the parasite with amino acids for protein synthesis, and regulates osmolarity (Probable).<ref>PMID:11782538</ref> <ref>PMID:15574427</ref> <ref>PMID:8844673</ref> 
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== Publication Abstract from PubMed ==
Antimalarial hit 1 SR (TCMDC-134674) identified in a GlaxoSmithKline cell based screening campaign was evaluated for inhibitory activity against the digestive vacuole plasmepsins (Plm I, II, and IV). It was found to be a potent Plm IV inhibitor with no selectivity over Cathepsin D. A cocrystal structure of 1 SR bound to Plm II was solved, providing structural insight for the design of more potent and selective analogues. Structure-guided optimization led to the identification of structurally simplified analogues 17 and 18 as low nanomolar inhibitors of both, plasmepsin Plm IV activity and P. falciparum growth in erythrocytes.

Plasmepsin inhibitory activity and structure-guided optimization of a potent hydroxyethylamine-based antimalarial hit.,Jaudzems K, Tars K, Maurops G, Ivdra N, Otikovs M, Leitans J, Kanepe-Lapsa I, Domraceva I, Mutule I, Trapencieris P, Blackman MJ, Jirgensons A ACS Med Chem Lett. 2014 Jan 13;5(4):373-7. doi: 10.1021/ml4004952. eCollection, 2014 Apr 10. PMID:24900843<ref>PMID:24900843</ref>

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

==See Also==
*[[Plasmepsin|Plasmepsin]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Plasmodium falciparum]]
[[Category: Jaudzems K]]
[[Category: Leitans J]]
[[Category: Tars K]]