6SZU

Bat Influenza A polymerase pre-termination complex with pyrophosphate using 44-mer vRNA template with mutated oligo(U) sequence


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.41 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A Structure-Based Model for the Complete Transcription Cycle of Influenza Polymerase.

Wandzik, J.M.Kouba, T.Karuppasamy, M.Pflug, A.Drncova, P.Provaznik, J.Azevedo, N.Cusack, S.

(2020) Cell 181: 877

  • DOI: https://doi.org/10.1016/j.cell.2020.03.061
  • Primary Citation of Related Structures:  
    6SZU, 6SZV, 6T0N, 6T0R, 6T0S, 6T0U, 6T0V, 6T0W, 6T2C, 6TU5, 6TW1

  • PubMed Abstract: 

    Influenza polymerase uses unique mechanisms to synthesize capped and polyadenylated mRNAs from the genomic viral RNA (vRNA) template, which is packaged inside ribonucleoprotein particles (vRNPs). Here, we visualize by cryoelectron microscopy the conformational dynamics of the polymerase during the complete transcription cycle from pre-initiation to termination, focusing on the template trajectory. After exiting the active site cavity, the template 3' extremity rebinds into a specific site on the polymerase surface. Here, it remains sequestered during all subsequent transcription steps, forcing the template to loop out as it further translocates. At termination, the strained connection between the bound template 5' end and the active site results in polyadenylation by stuttering at uridine 17. Upon product dissociation, further conformational changes release the trapped template, allowing recycling back into the pre-initiation state. Influenza polymerase thus performs transcription while tightly binding to and protecting both template ends, allowing efficient production of multiple mRNAs from a single vRNP.


  • Organizational Affiliation

    European Molecular Biology Laboratory, 71 Avenue des Martyrs, CS 90181, 38042 Grenoble Cedex 9, France.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Polymerase acidic protein738Influenza A virus (A/little yellow-shouldered bat/Guatemala/060/2010(H17N10))Mutation(s): 0 
Gene Names: PA
UniProt
Find proteins for H6QM92 (Influenza A virus)
Explore H6QM92 
Go to UniProtKB:  H6QM92
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupH6QM92
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
RNA-directed RNA polymerase catalytic subunit776Influenza A virus (A/little yellow-shouldered bat/Guatemala/060/2010(H17N10))Mutation(s): 0 
Gene Names: PB1
EC: 2.7.7.48
UniProt
Find proteins for H6QM91 (Influenza A virus)
Explore H6QM91 
Go to UniProtKB:  H6QM91
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupH6QM91
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Polymerase basic protein 2809Influenza A virus (A/little yellow-shouldered bat/Guatemala/060/2010(H17N10))Mutation(s): 0 
Gene Names: PB2
UniProt
Find proteins for H6QM90 (Influenza A virus)
Explore H6QM90 
Go to UniProtKB:  H6QM90
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupH6QM90
Sequence Annotations
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  • Reference Sequence
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Entity ID: 4
MoleculeChains LengthOrganismImage
vRNAD [auth V]44Influenza B virus
Sequence Annotations
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  • Reference Sequence

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Entity ID: 5
MoleculeChains LengthOrganismImage
mRNAE [auth M]10Influenza B virus
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
M4H
Query on M4H

Download Ideal Coordinates CCD File 
F [auth A]5-oxidanyl-4-oxidanylidene-1-[(1-pyrrolo[2,3-b]pyridin-1-ylcyclopentyl)methyl]pyridine-3-carboxylic acid
C19 H19 N3 O4
OTPKNUJKFUZRDR-UHFFFAOYSA-N
POP
Query on POP

Download Ideal Coordinates CCD File 
K [auth B]PYROPHOSPHATE 2-
H2 O7 P2
XPPKVPWEQAFLFU-UHFFFAOYSA-L
MG
Query on MG

Download Ideal Coordinates CCD File 
G [auth A]
H [auth A]
I [auth B]
J [auth B]
L [auth V]
G [auth A],
H [auth A],
I [auth B],
J [auth B],
L [auth V],
M
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.41 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French National Research AgencyFranceANR-18-CE11-0028

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-15
    Type: Initial release
  • Version 1.1: 2020-04-29
    Changes: Database references
  • Version 1.2: 2020-05-27
    Changes: Database references
  • Version 1.3: 2024-05-22
    Changes: Data collection, Database references