1IHM

CRYSTAL STRUCTURE ANALYSIS OF NORWALK VIRUS CAPSID


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.40 Å
  • R-Value Observed: 0.260 

Starting Model: experimental
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This is version 2.1 of the entry. See complete history


Literature

X-ray crystallographic structure of the Norwalk virus capsid

Prasad, B.V.Hardy, M.E.Dokland, T.Bella, J.Rossmann, M.G.Estes, M.K.

(1999) Science 286: 287-290

  • DOI: https://doi.org/10.1126/science.286.5438.287
  • Primary Citation of Related Structures:  
    1IHM

  • PubMed Abstract: 

    Norwalk virus, a noncultivatable human calicivirus, is the major cause of epidemic gastroenteritis in humans. The first x-ray structure of a calicivirus capsid, which consists of 180 copies of a single protein, has been determined by phase extension from a low-resolution electron microscopy structure. The capsid protein has a protruding (P) domain connected by a flexible hinge to a shell (S) domain that has a classical eight-stranded beta-sandwich motif. The structure of the P domain is unlike that of any other viral protein with a subdomain exhibiting a fold similar to that of the second domain in the eukaryotic translation elongation factor-Tu. This subdomain, located at the exterior of the capsid, has the largest sequence variation among Norwalk-like human caliciviruses and is likely to contain the determinants of strain specificity and cell binding.


  • Organizational Affiliation

    Verna and Marrs Mclean Department of Biochemistry, Division of Molecular Virology, Baylor College of Medicine, Houston, TX 77030, USA. bprasad@bcm.tmc.edu


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
capsid protein
A, B, C
530Norwalk virusMutation(s): 0 
UniProt
Find proteins for Q83884 (Norovirus (strain Human/NoV/United States/Norwalk/1968/GI))
Explore Q83884 
Go to UniProtKB:  Q83884
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ83884
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.40 Å
  • R-Value Observed: 0.260 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 605.74α = 90
b = 605.74β = 90
c = 466.71γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-05-16
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description
  • Version 2.0: 2023-04-19
    Type: Remediation
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Other, Refinement description
  • Version 2.1: 2024-04-03
    Changes: Data collection, Refinement description