7SKS

Crystal structure of measles virus matrix protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.54 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.232 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Measles and Nipah virus assembly: Specific lipid binding drives matrix polymerization.

Norris, M.J.Husby, M.L.Kiosses, W.B.Yin, J.Saxena, R.Rennick, L.J.Heiner, A.Harkins, S.S.Pokhrel, R.Schendel, S.L.Hastie, K.M.Landeras-Bueno, S.Salie, Z.L.Lee, B.Chapagain, P.P.Maisner, A.Duprex, W.P.Stahelin, R.V.Saphire, E.O.

(2022) Sci Adv 8: eabn1440-eabn1440

  • DOI: https://doi.org/10.1126/sciadv.abn1440
  • Primary Citation of Related Structures:  
    7SKS, 7SKT, 7SKU

  • PubMed Abstract: 

    Measles virus, Nipah virus, and multiple other paramyxoviruses cause disease outbreaks in humans and animals worldwide. The paramyxovirus matrix (M) protein mediates virion assembly and budding from host cell membranes. M is thus a key target for antivirals, but few high-resolution structures of paramyxovirus M are available, and we lack the clear understanding of how viral M proteins interact with membrane lipids to mediate viral assembly and egress that is needed to guide antiviral design. Here, we reveal that M proteins associate with phosphatidylserine and phosphatidylinositol 4,5-bisphosphate [PI(4,5)P 2 ] at the plasma membrane. Using x-ray crystallography, electron microscopy, and molecular dynamics, we demonstrate that PI(4,5)P 2 binding induces conformational and electrostatic changes in the M protein surface that trigger membrane deformation, matrix layer polymerization, and virion assembly.


  • Organizational Affiliation

    Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology, La Jolla, CA 92037, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Matrix protein
A, B
376Measles virus strain Ichinose-B95aMutation(s): 0 
Gene Names: M
UniProt
Find proteins for Q9W850 (Measles virus (strain Ichinose-B95a))
Explore Q9W850 
Go to UniProtKB:  Q9W850
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9W850
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.54 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.232 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.954α = 90
b = 85.954β = 90
c = 402.506γ = 120
Software Package:
Software NamePurpose
autoPROCdata processing
XDSdata reduction
Aimlessdata scaling
TRUNCATEdata processing
BUSTERrefinement
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other privateUnited States--

Revision History  (Full details and data files)

  • Version 1.0: 2022-08-24
    Type: Initial release
  • Version 1.1: 2023-10-18
    Changes: Data collection, Refinement description