View source for 8aqk


==Crystal Structure of Unlinked NS2B-NS3 Protease from Zika Virus in Complex with Inhibitor MI-2258==
<StructureSection load='8aqk' size='340' side='right'caption='[[8aqk]], [[Resolution|resolution]] 1.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8aqk]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Zika_virus Zika virus] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8AQK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8AQK 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]] 1.2&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=4J5:amino{[(3S)-3-amino-3-carboxypropyl]amino}methaniminium'>4J5</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=V7T:(2R)-6-azanyl-2-carbamimidamido-hexanoic+acid'>V7T</scene>, <scene name='pdbligand=V8N:2-[3-(aminomethyl)phenyl]ethanoic+acid'>V8N</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=8aqk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8aqk OCA], [https://pdbe.org/8aqk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8aqk RCSB], [https://www.ebi.ac.uk/pdbsum/8aqk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8aqk ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Three new series of macrocyclic active site-directed inhibitors of the Zika virus (ZIKV) NS2B-NS3 protease were synthesized. First, attempts were made to replace the basic P3 lysine residue of our previously described inhibitors with uncharged and more hydrophobic residues. This provided numerous compounds with inhibition constants between 30 and 50 nM. A stronger reduction of the inhibitory potency was observed when the P2 lysine was replaced by neutral residues, all of these inhibitors possess K(i) values &gt;1 microM. However, it is possible to replace the P2 lysine with the less basic 3-aminomethylphenylalanine, which provides a similarly potent inhibitor of the ZIKV protease (K(i) = 2.69 nM). Crystal structure investigations showed that the P2 benzylamine structure forms comparable interactions with the protease as lysine. Twelve additional structures of these inhibitors in complex with the protease were determined, which explain many, but not all, SAR data obtained in this study. All individual modifications in the P2 or P3 position resulted in inhibitors with low antiviral efficacy in cell culture. Therefore, a third inhibitor series with combined modifications was synthesized; all of them contain a more hydrophobic d-cyclohexylalanine in the linker segment. At a concentration of 40 microM, two of these compounds possess similar antiviral potency as ribavirin at 100 microM. Due to their reliable crystallization in complex with the ZIKV protease, these cyclic compounds are very well suited for a rational structure-based development of improved inhibitors.

Synthesis and structural characterization of new macrocyclic inhibitors of the Zika virus NS2B-NS3 protease.,Huber S, Braun NJ, Schmacke LC, Murra R, Bender D, Hildt E, Heine A, Steinmetzer T Arch Pharm (Weinheim). 2024 May 29:e2400250. doi: 10.1002/ardp.202400250. PMID:38809037<ref>PMID:38809037</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8aqk" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Zika virus]]
[[Category: Huber S]]
[[Category: Steinmetzer T]]