View source for 6e4c


==The N-terminal domain of PA endonuclease from the influenza H1N1 virus in complex with 3-hydroxy-6-(2-methyl-4-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)phenyl)-4-oxo-1,4-dihydropyridine-2-carboxylic acid==
<StructureSection load='6e4c' size='340' side='right'caption='[[6e4c]], [[Resolution|resolution]] 2.35&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6e4c]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Influenza_A_virus_(A/California/04/2009(H1N1)) Influenza A virus (A/California/04/2009(H1N1))]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6E4C OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6E4C 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]] 2.35&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=HRJ:3-hydroxy-6-[2-methyl-4-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)phenyl]-4-oxo-1,4-dihydropyridine-2-carboxylic+acid'>HRJ</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</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=6e4c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6e4c OCA], [https://pdbe.org/6e4c PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6e4c RCSB], [https://www.ebi.ac.uk/pdbsum/6e4c PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6e4c ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/C3W5S0_I09A0 C3W5S0_I09A0] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Significant efforts have been reported on the development of influenza antivirals including inhibitors of the RNA-dependent RNA polymerase PA N-terminal (PAN) endonuclease. Based on recently identified, highly active metal-binding pharmacophores (MBPs) for PAN endonuclease inhibition, a fragment-based drug development campaign was pursued. Guided by coordination chemistry and structure-based drug design, MBP scaffolds were elaborated to improve activity and selectivity. Structure-activity relationships were established and used to generate inhibitors of influenza endonuclease with tight-binding affinities. The activity of these inhibitors was analyzed using a fluorescence-quenching-based nuclease activity assay, and binding was validated using differential scanning fluorometry. Lead compounds were found to be highly selective for PAN endonuclease against several related dinuclear and mononuclear metalloenzymes. Combining principles of bioinorganic and medicinal chemistry in this study has resulted in some of the most active in vitro influenza PAN endonuclease inhibitors with high ligand efficiencies.

SAR Exploration of Tight-Binding Inhibitors of Influenza Virus PA Endonuclease.,Credille CV, Morrison CN, Stokes RW, Dick BL, Feng Y, Sun J, Chen Y, Cohen SM J Med Chem. 2019 Nov 14;62(21):9438-9449. doi: 10.1021/acs.jmedchem.9b00747. Epub, 2019 Oct 17. PMID:31536340<ref>PMID:31536340</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6e4c" style="background-color:#fffaf0;"></div>

==See Also==
*[[RNA polymerase 3D structures|RNA polymerase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Cohen SM]]
[[Category: Credille CV]]
[[Category: Dick BL]]
[[Category: Morrison CN]]