1T6O

Nucleocapsid-binding domain of the measles virus P protein (amino acids 457-507) in complex with amino acids 486-505 of the measles virus N protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for the attachment of a paramyxoviral polymerase to its template.

Kingston, R.L.Hamel, D.J.Gay, L.S.Dahlquist, F.W.Matthews, B.W.

(2004) Proc.Natl.Acad.Sci.USA 101: 8301-8306

  • DOI: 10.1073/pnas.0402690101

  • PubMed Abstract: 
  • The nucleocapsid of measles virus is the template for viral RNA synthesis and is generated through packaging of the genomic RNA by the nucleocapsid protein (N). The viral polymerase associates with the nucleocapsid through a small, trihelical binding ...

    The nucleocapsid of measles virus is the template for viral RNA synthesis and is generated through packaging of the genomic RNA by the nucleocapsid protein (N). The viral polymerase associates with the nucleocapsid through a small, trihelical binding domain at the carboxyl terminus of the phosphoprotein (P). Translocation of the polymerase along the nucleocapsid during RNA synthesis is thought to involve the repeated attachment and release of the binding domain. We have investigated the interaction between the binding domain from measles P (amino acids 457-507) and the sequence it recognizes within measles N (amino acids 477-505). By using both solution NMR spectroscopy and x-ray crystallography, we show that N(487-503) binds as a helix to the surface created by the second (alpha2) and third (alpha3) helices of P(457-507), in an orientation parallel to the helix alpha3, creating a four-helix bundle. The binding interface is tightly packed and dominated by hydrophobic amino acids. Binding and folding of N(487-503) are coupled. However, when not bound to P, N(487-503) does not resemble a statistical random coil but instead exists in a loosely structured state that mimics the bound conformation. We propose that before diffusional encounter, the ensemble of accessible conformations for N(487-503) is biased toward structures capable of binding P, facilitating rapid association of the two proteins. This study provides a structural analysis of polymerase-template interactions in a paramyxovirus and presents an example of a protein-protein interaction that must be only transiently maintained as part of its normal function.


    Related Citations: 
    • Characterization of nucleocapsid binding by the measles and the mumps virus phosphoprotein
      Kingston, R.L.,Baase, W.A.,Gay, L.S.
      () TO BE PUBLISHED --: --


    Organizational Affiliation

    Howard Hughes Medical Institute, Institute of Molecular Biology, University of Oregon, Eugene, OR 97403, USA. richard@uoxray.uoregon.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
phosphoprotein
A
51Measles virus (strain Edmonston-Moraten vaccine)Mutation(s): 1 
Gene Names: P
Find proteins for Q77M42 (Measles virus (strain Edmonston-Moraten vaccine))
Go to UniProtKB:  Q77M42
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
linker
L
8N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
phosphoprotein
B
20Measles virus (strain Edmonston-Moraten vaccine)Mutation(s): 0 
Gene Names: N (NP)
Find proteins for Q77M43 (Measles virus (strain Edmonston-Moraten vaccine))
Go to UniProtKB:  Q77M43
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.230 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 42.226α = 90.00
b = 42.226β = 90.00
c = 81.778γ = 90.00
Software Package:
Software NamePurpose
EPMRphasing
TNTrefinement
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-08-03
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance