6HXT

Crystal structure of the head domain of human CCDC61

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.213 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

CCDC61/VFL3 Is a Paralog of SAS6 and Promotes Ciliary Functions.

Ochi, T., Quarantotti, V., Lin, H., Jullien, J., Rosa E Silva, I., Boselli, F., Barnabas, D.D., Johnson, C.M., McLaughlin, S.H., Freund, S.M.V., Blackford, A.N., Kimata, Y., Goldstein, R.E., Jackson, S.P., Blundell, T.L., Dutcher, S.K., Gergely, F., van Breugel, M.

(2020) Structure 28: 674

  • DOI: https://doi.org/10.1016/j.str.2020.04.010
  • Primary Citation of Related Structures:  
    6HXT, 6HXV, 6HXY

  • PubMed Abstract: 

    • Centrioles are cylindrical assemblies whose peripheral microtubule array displays a 9-fold rotational symmetry that is established by the scaffolding protein SAS6. Centriole symmetry can be broken by centriole-associated structures, such as the striated fibers in Chlamydomonas that are important for ciliary function ...

    Centrioles are cylindrical assemblies whose peripheral microtubule array displays a 9-fold rotational symmetry that is established by the scaffolding protein SAS6. Centriole symmetry can be broken by centriole-associated structures, such as the striated fibers in Chlamydomonas that are important for ciliary function. The conserved protein CCDC61/VFL3 is involved in this process, but its exact role is unclear. Here, we show that CCDC61 is a paralog of SAS6. Crystal structures of CCDC61 demonstrate that it contains two homodimerization interfaces that are similar to those found in SAS6, but result in the formation of linear filaments rather than rings. Furthermore, we show that CCDC61 binds microtubules and that residues involved in CCDC61 microtubule binding are important for ciliary function in Chlamydomonas. Together, our findings suggest that CCDC61 and SAS6 functionally diverged from a common ancestor while retaining the ability to scaffold the assembly of basal body-associated structures or centrioles, respectively.

    Organizational Affiliation: 

    MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge CB2 0QH, UK. Electronic address: m.vanbreugel@qmul.ac.uk.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Coiled-coil domain-containing protein 61A, B, C145Homo sapiensMutation(s): 0 
Gene Names: CCDC61
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y6R9 (Homo sapiens)
Explore Q9Y6R9 
Go to UniProtKB:  Q9Y6R9
PHAROS:  Q9Y6R9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9Y6R9
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE		A, B, C L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.213 
  • Space Group: P 2 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 36.877α = 90
b = 68.222β = 90
c = 180.728γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHENIXphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United Kingdom--
Wellcome TrustUnited Kingdom--

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-29
    Type: Initial release
  • Version 1.1: 2020-05-06
    Changes: Database references
  • Version 1.2: 2020-05-20
    Changes: Database references
  • Version 1.3: 2020-06-10
    Changes: Database references