6Z8K

La Crosse virus polymerase at elongation mimicking stage


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.02 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Pre-initiation and elongation structures of full-length La Crosse virus polymerase reveal functionally important conformational changes.

Arragain, B.Effantin, G.Gerlach, P.Reguera, J.Schoehn, G.Cusack, S.Malet, H.

(2020) Nat Commun 11: 3590-3590

  • DOI: 10.1038/s41467-020-17349-4
  • Primary Citation of Related Structures:  
    6Z6B, 6Z6G, 6Z8K

  • PubMed Abstract: 
  • Bunyavirales is an order of segmented negative-strand RNA viruses comprising several life-threatening pathogens against which no effective treatment is currently available. Replication and transcription of the RNA genome constitute essential processes performed by the virally encoded multi-domain RNA-dependent RNA polymerase ...

    Bunyavirales is an order of segmented negative-strand RNA viruses comprising several life-threatening pathogens against which no effective treatment is currently available. Replication and transcription of the RNA genome constitute essential processes performed by the virally encoded multi-domain RNA-dependent RNA polymerase. Here, we describe the complete high-resolution cryo-EM structure of La Crosse virus polymerase. It reveals the presence of key protruding C-terminal domains, notably the cap-binding domain, which undergoes large movements related to its role in transcription initiation, and a zinc-binding domain that displays a fold not previously observed. We capture the polymerase structure at pre-initiation and elongation states, uncovering the coordinated movement of the priming loop, mid-thumb ring linker and lid domain required for the establishment of a ten-base-pair template-product RNA duplex before strand separation into respective exit tunnels. These structural details and the observed dynamics of key functional elements will be instrumental for structure-based development of polymerase inhibitors.


    Organizational Affiliation

    Université Grenoble Alpes, CNRS, CEA, Institute for Structural Biology (IBS), F-38000, Grenoble, France. helene.malet@ibs.fr.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
RNA-directed RNA polymerase LF [auth A]2285La Crosse orthobunyavirusMutation(s): 0 
EC: 2.7.7.48 (PDB Primary Data), 3.1 (PDB Primary Data)
UniProt
Find proteins for A5HC98 (Bunyavirus La Crosse)
Explore A5HC98 
Go to UniProtKB:  A5HC98
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA5HC98
Protein Feature View
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsLengthOrganismImage
La Crosse virus 5' vRNA 1-10A [auth C],
D [auth T]
10La Crosse orthobunyavirus
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
La Crosse virus 5' vRNA (9-16)B [auth X]8La Crosse orthobunyavirus
Protein Feature View
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsLengthOrganismImage
La Crosse virus 3' vRNA (1-16)C [auth H],
E [auth P]
16La Crosse orthobunyavirus
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN (Subject of Investigation/LOI)
Query on ZN

Download Ideal Coordinates CCD File 
G [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG (Subject of Investigation/LOI)
Query on MG

Download Ideal Coordinates CCD File 
H [auth A]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.02 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French National Research AgencyFranceANR-19-CE11-0024-02

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-29
    Type: Initial release