5AMR

Structure of the La Crosse Bunyavirus polymerase in complex with the 3' viral RNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.57 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Insights Into Bunyavirus Replication and its Regulation by the Vrna Promoter.

Gerlach, P.Malet, H.Cusack, S.Reguera, J.

(2015) Cell 161: 1267

  • DOI: 10.1016/j.cell.2015.05.006
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Segmented negative-strand RNA virus (sNSV) polymerases transcribe and replicate the viral RNA (vRNA) within a ribonucleoprotein particle (RNP). We present cryo-EM and X-ray structures of, respectively, apo- and vRNA bound La Crosse orthobunyavirus (L ...

    Segmented negative-strand RNA virus (sNSV) polymerases transcribe and replicate the viral RNA (vRNA) within a ribonucleoprotein particle (RNP). We present cryo-EM and X-ray structures of, respectively, apo- and vRNA bound La Crosse orthobunyavirus (LACV) polymerase that give atomic-resolution insight into how such RNPs perform RNA synthesis. The complementary 3' and 5' vRNA extremities are sequence specifically bound in separate sites on the polymerase. The 5' end binds as a stem-loop, allosterically structuring functionally important polymerase active site loops. Identification of distinct template and product exit tunnels allows proposal of a detailed model for template-directed replication with minimal disruption to the circularised RNP. The similar overall architecture and vRNA binding of monomeric LACV to heterotrimeric influenza polymerase, despite high sequence divergence, suggests that all sNSV polymerases have a common evolutionary origin and mechanism of RNA synthesis. These results will aid development of replication inhibitors of diverse, serious human pathogenic viruses.


    Organizational Affiliation

    European Molecular Biology Laboratory, Grenoble Outstation, 71 Avenue des Martyrs, CS90181, 38042 Grenoble Cedex 9, France; Unit of Virus Host-Cell Interactions (UMI 3265), University Grenoble Alpes-EMBL-CNRS, 71 Avenue des Martyrs, CS90181, 38042 Grenoble Cedex 9, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA POLYMERASE L
A
2264Bunyavirus La CrosseMutation(s): 0 
Gene Names: L
EC: 2.7.7.48, 3.1.-.-
Find proteins for A5HC98 (Bunyavirus La Crosse)
Go to UniProtKB:  A5HC98
Entity ID: 2
MoleculeChainsLengthOrganism
RNAB16La Crosse virus
Entity ID: 3
MoleculeChainsLengthOrganism
RNAC8La Crosse virus
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.57 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.204 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 102.000α = 90.00
b = 140.700β = 90.00
c = 162.400γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
PHENIXrefinement
XSCALEdata scaling
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-06-03
    Type: Initial release
  • Version 1.1: 2015-06-17
    Type: Database references
  • Version 1.2: 2019-04-03
    Type: Data collection, Other, Source and taxonomy