5ize: Difference between revisions
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<StructureSection load='5ize' size='340' side='right'caption='[[5ize]], [[Resolution|resolution]] 1.70Å' scene=''> | <StructureSection load='5ize' size='340' side='right'caption='[[5ize]], [[Resolution|resolution]] 1.70Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[5ize]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5IZE OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[5ize]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Hantaan_virus_76-118 Hantaan virus 76-118]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5IZE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5IZE FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.7Å</td></tr> | ||
<tr id=' | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MN3:MANGANESE+(III)+ION'>MN3</scene></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5ize FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ize OCA], [https://pdbe.org/5ize PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5ize RCSB], [https://www.ebi.ac.uk/pdbsum/5ize PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5ize ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/L_HANTV L_HANTV] | |||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Hantaan virus 76-118]] | |||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Cusack S]] | |||
[[Category: Cusack | [[Category: Reguera J]] | ||
[[Category: Reguera | |||
Latest revision as of 13:39, 6 September 2023
Hantaan virus L protein cap-snatching endonucleaseHantaan virus L protein cap-snatching endonuclease
Structural highlights
FunctionPublication Abstract from PubMedSegmented negative strand RNA viruses of the arena-, bunya- and orthomyxovirus families uniquely carry out viral mRNA transcription by the cap-snatching mechanism. This involves cleavage of host mRNAs close to their capped 5' end by an endonuclease (EN) domain located in the N-terminal region of the viral polymerase. We present the structure of the cap-snatching EN of Hantaan virus, a bunyavirus belonging to hantavirus genus. Hantaan EN has an active site configuration, including a metal co-ordinating histidine, and nuclease activity similar to the previously reported La Crosse virus and Influenza virus ENs (orthobunyavirus and orthomyxovirus respectively), but is more active in cleaving a double stranded RNA substrate. In contrast, Lassa arenavirus EN has only acidic metal co-ordinating residues. We present three high resolution structures of Lassa virus EN with different bound ion configurations and show in comparative biophysical and biochemical experiments with Hantaan, La Crosse and influenza ENs that the isolated Lassa EN is essentially inactive. The results are discussed in the light of EN activation mechanisms revealed by recent structures of full-length influenza virus polymerase. Comparative Structural and Functional Analysis of Bunyavirus and Arenavirus Cap-Snatching Endonucleases.,Reguera J, Gerlach P, Rosenthal M, Gaudon S, Coscia F, Gunther S, Cusack S PLoS Pathog. 2016 Jun 15;12(6):e1005636. doi: 10.1371/journal.ppat.1005636., eCollection 2016 Jun. PMID:27304209[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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