4LP7

Crystal structure of the human metapneumovirus matrix protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.83 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.187 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure and self-assembly of the calcium binding matrix protein of human metapneumovirus.

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

(2014) Structure 22: 136-148

  • DOI: 10.1016/j.str.2013.10.013
  • Primary Citation of Related Structures:  
    4LP7

  • PubMed Abstract: 
  • The matrix protein (M) of paramyxoviruses plays a key role in determining virion morphology by directing viral assembly and budding. Here, we report the crystal structure of the human metapneumovirus M at 2.8 Å resolution in its native dimeric state. The structure reveals the presence of a high-affinity Ca²⁺ binding site ...

    The matrix protein (M) of paramyxoviruses plays a key role in determining virion morphology by directing viral assembly and budding. Here, we report the crystal structure of the human metapneumovirus M at 2.8 Å resolution in its native dimeric state. The structure reveals the presence of a high-affinity Ca²⁺ binding site. Molecular dynamics simulations (MDS) predict a secondary lower-affinity site that correlates well with data from fluorescence-based thermal shift assays. By combining small-angle X-ray scattering with MDS and ensemble analysis, we captured the structure and dynamics of M in solution. Our analysis reveals a large positively charged patch on the protein surface that is involved in membrane interaction. Structural analysis of DOPC-induced polymerization of M into helical filaments using electron microscopy leads to a model of M self-assembly. The conservation of the Ca²⁺ binding sites suggests a role for calcium in the replication and morphogenesis of pneumoviruses.


    Organizational Affiliation

    Division of Structural Biology, The Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK; Diamond Light Source Limited, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, UK. Electronic address: jonathan@strubi.ox.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Matrix protein MA, B, C, D254Human metapneumovirusMutation(s): 0 
Gene Names: M
UniProt
Find proteins for Q91F56 (Human metapneumovirus)
Explore Q91F56 
Go to UniProtKB:  Q91F56
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ91F56
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.83 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.187 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.009α = 90
b = 62.009β = 90
c = 275.385γ = 120
Software Package:
Software NamePurpose
PHASERphasing
BUSTER-TNTrefinement
PDB_EXTRACTdata extraction
GDAdata collection
HKL-2000data reduction
SCALAdata scaling
BUSTERrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-12-18
    Type: Initial release
  • Version 1.1: 2014-01-29
    Changes: Database references