1F15

CUCUMBER MOSAIC VIRUS (STRAIN FNY)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Observed: 0.246 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The structure of cucumber mosaic virus and comparison to cowpea chlorotic mottle virus.

Smith, T.J.Chase, E.Schmidt, T.Perry, K.L.

(2000) J Virol 74: 7578-7586

  • DOI: 10.1128/jvi.74.16.7578-7586.2000
  • Primary Citation of Related Structures:  
    1F15

  • PubMed Abstract: 
  • The structure of cucumber mosaic virus (CMV; strain Fny) has been determined to a 3.2-A resolution using X-ray crystallography. Despite the fact that CMV has only 19% capsid protein sequence identity (34% similarity) to cowpea chlorotic mottle virus (CCMV), the core structures of these two members of the Bromoviridae family are highly homologous ...

    The structure of cucumber mosaic virus (CMV; strain Fny) has been determined to a 3.2-A resolution using X-ray crystallography. Despite the fact that CMV has only 19% capsid protein sequence identity (34% similarity) to cowpea chlorotic mottle virus (CCMV), the core structures of these two members of the Bromoviridae family are highly homologous. As suggested by a previous low-resolution structural study, the 305-A diameter (maximum) of CMV is approximately 12 A larger than that of CCMV. In CCMV, the structures of the A, B, and C subunits are nearly identical except in their N termini. In contrast, the structures of two loops in subunit A of CMV differ from those in B and C. These loops are 6 and 7 residues longer than the analogous regions in CCMV. Unlike that of CCMV, the capsid of CMV does not undergo swelling at pH 7.0 and is stable at pH 9.0. This may be partly due to the fact that the N termini of the B and C subunits form a unique bundle of six amphipathic helices oriented down into the virion core at the threefold axes. In addition, while CCMV has a cluster of aspartic acid residues at the quasi-threefold axis that are proposed to bind metal in a pH-dependent manner, this cluster is replaced by complementing acids and bases in CMV. Finally, this structure clearly demonstrates that the residues important for aphid transmission lie at the outermost portion of the betaH-betaI loop and yields details of the portions of the virus that are hypothesized to mediate binding to aphid mouthparts.


    Organizational Affiliation

    Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA. tom@bragg.bio.purdue.edu



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
COAT PROTEINA, B, C218Cucumber mosaic virus (strain FNY)Mutation(s): 0 
Gene Names: ORF3b
UniProt
Find proteins for P69466 (Cucumber mosaic virus (strain FNY))
Explore P69466 
Go to UniProtKB:  P69466
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Observed: 0.246 
  • Space Group: P 42 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 336α = 90
b = 336β = 90
c = 336γ = 90
Software Package:
Software NamePurpose
RAVEmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
RAVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-06-21
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance