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5j1p

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Revision as of 07:25, 10 June 2020

Lassa virus L protein cap-snatching endonuclease. Bound to two manganese ions

Structural highlights

5j1p is a 1 chain structure with sequence from Lassa mammarenavirus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	5izh, 5ize, 5j1n
Activity:	RNA-directed RNA polymerase, with EC number 2.7.7.48
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[Q6GWS6_9VIRU] RNA-dependent RNA polymerase which is responsible for replication and transcription of the viral RNA genome. During transcription, synthesizes 4 subgenomic RNAs, and assures their capping by a cap-snatching mechanism, in which cellular capped pre-mRNA are used to generate primers for viral transcription. The 3'-end of subgenomic mRNAs molecules are heterogeneous and not polyadenylated. The replicase function is to direct synthesis of antigenomic and genomic RNA which are encapsidated and non capped. As a consequence of the use of the same enzyme for both transcription and replication, these mechanisms need to be well coordinated. These processes may be regulated by proteins N and Z in a dose-dependent manner.[PIRNR:PIRNR000836]

Publication Abstract from PubMed

Segmented 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.

References

↑ Reguera J, Gerlach P, Rosenthal M, Gaudon S, Coscia F, Gunther S, Cusack S. Comparative Structural and Functional Analysis of Bunyavirus and Arenavirus Cap-Snatching Endonucleases. PLoS Pathog. 2016 Jun 15;12(6):e1005636. doi: 10.1371/journal.ppat.1005636., eCollection 2016 Jun. PMID:27304209 doi:http://dx.doi.org/10.1371/journal.ppat.1005636

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5j1p"

@@ Line 1: / Line 1: @@
 ==Lassa virus L protein cap-snatching endonuclease. Bound to two manganese ions==
-<StructureSection load='5j1p' size='340' side='right' caption='[[5j1p]], [[Resolution|resolution]] 2.36&Aring;' scene=''>
+<StructureSection load='5j1p' size='340' side='right'caption='[[5j1p]], [[Resolution|resolution]] 2.36&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5j1p]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5J1P OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5J1P FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5j1p]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Lassa_mammarenavirus Lassa mammarenavirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5J1P OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5J1P FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MN3:MANGANESE+(III)+ION'>MN3</scene></td></tr>
+</td></tr><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='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5izh|5izh]], [[5ize|5ize]], [[5j1n|5j1n]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/RNA-directed_RNA_polymerase RNA-directed RNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.48 2.7.7.48] </span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5j1p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5j1p OCA], [http://pdbe.org/5j1p PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5j1p RCSB], [http://www.ebi.ac.uk/pdbsum/5j1p PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5j1p ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5j1p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5j1p OCA], [http://pdbe.org/5j1p PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5j1p RCSB], [http://www.ebi.ac.uk/pdbsum/5j1p PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5j1p ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 20: / Line 20: @@
 </div>
 <div class="pdbe-citations 5j1p" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[RNA polymerase 3D structures|RNA polymerase 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
+[[Category: Lassa mammarenavirus]]
 [[Category: RNA-directed RNA polymerase]]
 [[Category: Cusack, S]]

5j1p

From Proteopedia

Revision as of 07:25, 10 June 2020

Lassa virus L protein cap-snatching endonuclease. Bound to two manganese ions

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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