View source for 6lnn


==Crystal structure of MERS-CoV N-NTD complexed with ligand P4-1==
<StructureSection load='6lnn' size='340' side='right'caption='[[6lnn]], [[Resolution|resolution]] 2.63&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6lnn]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Middle_East_respiratory_syndrome-related_coronavirus Middle East respiratory syndrome-related coronavirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6LNN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6LNN 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]] 2.634&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EJC:5-propoxy-1H-indole'>EJC</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=6lnn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6lnn OCA], [https://pdbe.org/6lnn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6lnn RCSB], [https://www.ebi.ac.uk/pdbsum/6lnn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6lnn ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/NCAP_MERS1 NCAP_MERS1] Packages the positive strand viral genome RNA into a helical ribonucleocapsid (RNP) and plays a fundamental role during virion assembly through its interactions with the viral genome and membrane protein M. Plays an important role in enhancing the efficiency of subgenomic viral RNA transcription as well as viral replication.[HAMAP-Rule:MF_04096]
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== Publication Abstract from PubMed ==
Epidemics caused by coronaviruses (CoVs), namely the severe acute respiratory syndrome (SARS) (2003), Middle East respiratory syndrome (MERS) (2012), and coronavirus disease 2019 (COVID-19) (2019), have triggered a global public health emergency. Drug development against CoVs is inherently arduous. The nucleocapsid (N) protein forms an oligomer and facilitates binding with the viral RNA genome, which is critical in the life cycle of the virus. In the current study, we found a potential allosteric site (Site 1) using PARS, an online allosteric site predictor, in the CoV N-N-terminal RNA-binding domain (NTD) to modulate the N protein conformation. We identified 5-hydroxyindole as the lead via molecular docking to target Site 1. We designed and synthesized four 5-hydroxyindole derivatives, named P4-1 to P4-4, based on the pose of 5-hydroxyindole in the docking model complex. Small-angle X-ray scattering (SAXS) data indicate that two 5-hydroxyindole compounds with higher hydrophobic R-groups mediate the binding between N-NTD and N-C-terminal dimerization domain (CTD) and elicit high-order oligomerization of the whole N protein. Furthermore, the crystal structures suggested that these two compounds act on this novel cavity and create a flat surface with higher hydrophobicity, which may mediate the interaction between N-NTD and N-CTD. Taken together, we discovered an allosteric binding pocket targeting small molecules that induces abnormal aggregation of the CoV N protein. These novel concepts will facilitate protein-protein interaction (PPI)-based drug design against various CoVs.

Targeting the N-Terminus Domain of the Coronavirus Nucleocapsid Protein Induces Abnormal Oligomerization via Allosteric Modulation.,Hsu JN, Chen JS, Lin SM, Hong JY, Chen YJ, Jeng US, Luo SY, Hou MH Front Mol Biosci. 2022 Apr 19;9:871499. doi: 10.3389/fmolb.2022.871499., eCollection 2022. PMID:35517857<ref>PMID:35517857</ref>

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

==See Also==
*[[Nucleoprotein 3D structures|Nucleoprotein 3D structures]]
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Middle East respiratory syndrome-related coronavirus]]
[[Category: Hou MH]]
[[Category: Hsu JN]]
[[Category: Lin SM]]