Structure of the C-terminal domain of Cnm67, a core component of the spindle pole body of Saccharomyces cerevisiae

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.239 

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Structure-function analysis of the C-terminal domain of CNM67, a core component of the Saccharomyces cerevisiae spindle pole body.

Klenchin, V.A.Frye, J.J.Jones, M.H.Winey, M.Rayment, I.

(2011) J Biol Chem 286: 18240-18250

  • DOI: https://doi.org/10.1074/jbc.M111.227371
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The spindle pole body of the budding yeast Saccharomyces cerevisiae has served as a model system for understanding microtubule organizing centers, yet very little is known about the molecular structure of its components. We report here the structure of the C-terminal domain of the core component Cnm67 at 2.3 Å resolution. The structure determination was aided by a novel approach to crystallization of proteins containing coiled-coils that utilizes globular domains to stabilize the coiled-coils. This enhances their solubility in Escherichia coli and improves their crystallization. The Cnm67 C-terminal domain (residues Asn-429-Lys-581) exhibits a previously unseen dimeric, interdigitated, all α-helical fold. In vivo studies demonstrate that this domain alone is able to localize to the spindle pole body. In addition, the structure reveals a large functionally indispensable positively charged surface patch that is implicated in spindle pole body localization. Finally, the C-terminal eight residues are disordered but are critical for protein folding and structural stability.

  • Organizational Affiliation

    Department of Biochemistry, University of Wisconsin, Madison, Wisconsin 53706, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Head morphogenesis protein, Chaotic nuclear migration protein 67 fusion protein206Salasvirus phi29Saccharomyces cerevisiae
This entity is chimeric
Mutation(s): 0 
Gene Names: 7CNM67YNL225CN1264
Find proteins for P13848 (Bacillus phage phi29)
Explore P13848 
Go to UniProtKB:  P13848
Find proteins for P53865 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P53865 
Go to UniProtKB:  P53865
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP13848P53865
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on MSE
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.239 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.76α = 90
b = 198.563β = 90
c = 53.232γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-03-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2016-06-22
    Changes: Database references
  • Version 1.3: 2017-08-16
    Changes: Refinement description, Source and taxonomy, Structure summary