2wfs

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[[Image:2wfs.png|left|200px]]
 
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==Fitting of influenza virus NP structure into the 9-fold symmetryzed cryoEM reconstruction of an active RNP particle.==
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The line below this paragraph, containing "STRUCTURE_2wfs", creates the "Structure Box" on the page.
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<SX load='2wfs' size='340' side='right' viewer='molstar' caption='[[2wfs]], [[Resolution|resolution]] 12.00&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[2wfs]] is a 9 chain structure with sequence from [https://en.wikipedia.org/wiki/Influenza_A_virus Influenza A virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WFS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2WFS FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 12&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2wfs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wfs OCA], [https://pdbe.org/2wfs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2wfs RCSB], [https://www.ebi.ac.uk/pdbsum/2wfs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2wfs ProSAT]</span></td></tr>
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{{STRUCTURE_2wfs| PDB=2wfs | SCENE= }}
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/NCAP_I34A1 NCAP_I34A1] Encapsidates the negative strand viral RNA, protecting it from nucleases. The encapsidated genomic RNA is termed the ribonucleoprotein (RNP) and serves as template for transcription and replication. The RNP needs to be localized in the nucleus to start an infectious cycle, but is too large to diffuse through the nuclear pore complex. NP comprises at least 2 nuclear localization signals and is responsible of the active RNP import into the nucleus through the cellular importin alpha/beta pathway. Later in the infection, nucleus export of RNP are mediated through viral proteins NEP interacting with M1 which binds nucleoproteins. It is possible that the nucleoprotein binds directly exportin-1 (XPO1) and plays an active role in RNP nuclear export. M1 interaction with RNP seems to hide nucleoprotein's nuclear localization signals. Soon after a virion infects a new cell, M1 dissociates from the RNP under acidification of the virion driven by M2 protein. Dissociation of M1 from RNP unmask nucleoprotein's nuclear localization signals, targeting the RNP to the nucleus.
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The influenza viruses contain a segmented, single-stranded RNA genome of negative polarity. Each RNA segment is encapsidated by the nucleoprotein and the polymerase complex into ribonucleoprotein particles (RNPs), which are responsible for virus transcription and replication. Despite their importance, information about the structure of these RNPs is scarce. We have determined the three-dimensional structure of a biologically active recombinant RNP by cryo-electron microscopy. The structure shows a nonameric nucleoprotein ring (at 12 Angstrom resolution) with two monomers connected to the polymerase complex (at 18 Angstrom resolution). Docking the atomic structures of the nucleoprotein and polymerase domains, as well as mutational analyses, has allowed us to define the interactions between the functional elements of the RNP and to propose the location of the viral RNA. Our results provide the first model for a functional negative-stranded RNA virus ribonucleoprotein complex. The structure reported here will serve as a framework to generate a quasi-atomic model of the molecular machine responsible for viral RNA synthesis and to test new models for virus RNA replication and transcription.
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===FITTING OF INFLUENZA VIRUS NP STRUCTURE INTO THE 9-FOLD SYMMETRYZED CRYOEM RECONSTRUCTION OF AN ACTIVE RNP PARTICLE.===
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The structure of a biologically active influenza virus ribonucleoprotein complex.,Coloma R, Valpuesta JM, Arranz R, Carrascosa JL, Ortin J, Martin-Benito J PLoS Pathog. 2009 Jun;5(6):e1000491. Epub 2009 Jun 26. PMID:19557158<ref>PMID:19557158</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 2wfs" style="background-color:#fffaf0;"></div>
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==See Also==
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The line below this paragraph, {{ABSTRACT_PUBMED_19557158}}, adds the Publication Abstract to the page
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*[[Nucleoprotein 3D structures|Nucleoprotein 3D structures]]
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(as it appears on PubMed at http://www.pubmed.gov), where 19557158 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_19557158}}
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__TOC__
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</SX>
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==About this Structure==
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[[Category: Influenza A virus]]
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[[2wfs]] is a 9 chain structure with sequence from [http://en.wikipedia.org/wiki/Influenza_a_virus Influenza a virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WFS OCA].
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[[Category: Large Structures]]
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[[Category: Arranz R]]
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==Reference==
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[[Category: Carrascosa JL]]
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<ref group="xtra">PMID:019557158</ref><references group="xtra"/>
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[[Category: Coloma R]]
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[[Category: Influenza a virus]]
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[[Category: Martin-Benito J]]
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[[Category: Arranz, R.]]
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[[Category: Ortin J]]
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[[Category: Carrascosa, J L.]]
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[[Category: Valpuesta JM]]
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[[Category: Coloma, R.]]
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[[Category: Martin-Benito, J.]]
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[[Category: Ortin, J.]]
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[[Category: Valpuesta, J M.]]
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[[Category: Host-virus interaction]]
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[[Category: Influenza]]
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[[Category: Nucleoprotein]]
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[[Category: Nucleus]]
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[[Category: Ribonucleoprotein]]
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[[Category: Rna]]
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[[Category: Rna viruse]]
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[[Category: Rna-binding]]
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[[Category: Viral nucleoprotein]]
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[[Category: Viral protein]]
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[[Category: Virion]]
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Current revision

Fitting of influenza virus NP structure into the 9-fold symmetryzed cryoEM reconstruction of an active RNP particle.

2wfs, resolution 12.00Å

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OCA

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