4CS8

Crystal structure of the asymmetric human metapneumovirus M2-1 tetramer, form 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Drastic Changes in Conformational Dynamics of the Antiterminator M2-1 Regulate Transcription Efficiency in Pneumovirinae.

Leyrat, C.Renner, M.Harlos, K.Huiskonen, J.T.Grimes, J.M.

(2014) Elife 3: 02674

  • DOI: https://doi.org/10.7554/eLife.02674
  • Primary Citation of Related Structures:  
    4CS7, 4CS8, 4CS9, 4CSA

  • PubMed Abstract: 

    The M2-1 protein of human metapneumovirus (HMPV) is a zinc-binding transcription antiterminator which is highly conserved among pneumoviruses. We report the structure of tetrameric HMPV M2-1. Each protomer features a N-terminal zinc finger domain and an α-helical tetramerization motif forming a rigid unit, followed by a flexible linker and an α-helical core domain. The tetramer is asymmetric, three of the protomers exhibiting a closed conformation, and one an open conformation. Molecular dynamics simulations and SAXS demonstrate a dynamic equilibrium between open and closed conformations in solution. Structures of adenosine monophosphate- and DNA- bound M2-1 establish the role of the zinc finger domain in base-specific recognition of RNA. Binding to 'gene end' RNA sequences stabilized the closed conformation of M2-1 leading to a drastic shift in the conformational landscape of M2-1. We propose a model for recognition of gene end signals and discuss the implications of these findings for transcriptional regulation in pneumoviruses.DOI: http://dx.doi.org/10.7554/eLife.02674.001.


  • Organizational Affiliation

    Division of Structural Biology, Wellcome Trust Centre for Human Genetics, Oxford, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
M2-1A,
B,
D [auth E]
189human metapneumovirusMutation(s): 0 
UniProt
Find proteins for Q8QN58 (human metapneumovirus)
Explore Q8QN58 
Go to UniProtKB:  Q8QN58
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8QN58
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
M2-1189human metapneumovirusMutation(s): 0 
UniProt
Find proteins for Q8QN58 (human metapneumovirus)
Explore Q8QN58 
Go to UniProtKB:  Q8QN58
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8QN58
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.98α = 90
b = 93.42β = 95.44
c = 85.21γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-05-28
    Type: Initial release
  • Version 1.1: 2014-10-22
    Changes: Database references
  • Version 1.2: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description