8rnb: Difference between revisions
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New page: '''Unreleased structure''' The entry 8rnb is ON HOLD Authors: Arragain, B., Cusack, S. Description: Influenza B polymerase, encapsidase plus 627(R) / human ANP32A (from ""Influenza B p... |
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The | ==Influenza B polymerase, encapsidase plus 627(R) / human ANP32A (from "Influenza B polymerase apo-trimer" | Local refinement)== | ||
<StructureSection load='8rnb' size='340' side='right'caption='[[8rnb]], [[Resolution|resolution]] 3.31Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[8rnb]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Influenza_B_virus_(B/Memphis/13/2003) Influenza B virus (B/Memphis/13/2003)]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8RNB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8RNB FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.31Å</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=8rnb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8rnb OCA], [https://pdbe.org/8rnb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8rnb RCSB], [https://www.ebi.ac.uk/pdbsum/8rnb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8rnb ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/Q5V8Z9_9INFB Q5V8Z9_9INFB] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Replication of influenza viral RNA depends on at least two viral polymerases, a parental replicase and an encapsidase, and cellular factor ANP32. ANP32 comprises an LRR domain and a long C-terminal low complexity acidic region (LCAR). Here we present evidence suggesting that ANP32 is recruited to the replication complex as an electrostatic chaperone that stabilises the encapsidase moiety within apo-polymerase symmetric dimers that are distinct for influenza A and B polymerases. The ANP32 bound encapsidase, then forms the asymmetric replication complex with the replicase, which is embedded in a parental ribonucleoprotein particle (RNP). Cryo-EM structures reveal the architecture of the influenza A and B replication complexes and the likely trajectory of the nascent RNA product into the encapsidase. The cryo-EM map of the FluB replication complex shows extra density attributable to the ANP32 LCAR wrapping around and stabilising the apo-encapsidase conformation. These structures give new insight into the various mutations that adapt avian strain polymerases to use the distinct ANP32 in mammalian cells. | |||
Structures of influenza A and B replication complexes give insight into avian to human host adaptation and reveal a role of ANP32 as an electrostatic chaperone for the apo-polymerase.,Arragain B, Krischuns T, Pelosse M, Drncova P, Blackledge M, Naffakh N, Cusack S Nat Commun. 2024 Aug 19;15(1):6910. doi: 10.1038/s41467-024-51007-3. PMID:39160148<ref>PMID:39160148</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: Arragain | <div class="pdbe-citations 8rnb" style="background-color:#fffaf0;"></div> | ||
[[Category: Cusack | == References == | ||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Arragain B]] | |||
[[Category: Cusack S]] | |||
Latest revision as of 06:05, 11 September 2024
Influenza B polymerase, encapsidase plus 627(R) / human ANP32A (from "Influenza B polymerase apo-trimer" | Local refinement)
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