6O2K

Drosophila melanogaster CENP-C cupin domain

  • Classification: CELL CYCLE
  • Organism(s): Drosophila melanogaster
  • Expression System: Escherichia coli
  • Mutation(s): No 

  • Deposited: 2019-02-23 Released: 2019-08-21 
  • Deposition Author(s): Chik, J.K., Cho, U.S.
  • Funding Organization(s): National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structures of CENP-C cupin domains at regional centromeres reveal unique patterns of dimerization and recruitment functions for the inner pocket.

Chik, J.K.Moiseeva, V.Goel, P.K.Meinen, B.A.Koldewey, P.An, S.Mellone, B.G.Subramanian, L.Cho, U.S.

(2019) J Biol Chem 294: 14119-14134

  • DOI: 10.1074/jbc.RA119.008464
  • Primary Citation of Related Structures:  
    6O2K, 6O2D

  • PubMed Abstract: 
  • The successful assembly and regulation of the kinetochore are critical for the equal and accurate segregation of genetic material during the cell cycle. CENP-C (centromere protein C), a conserved inner kinetochore component, has been broadly characterized as a scaffolding protein and is required for the recruitment of multiple kinetochore proteins to the centromere ...

    The successful assembly and regulation of the kinetochore are critical for the equal and accurate segregation of genetic material during the cell cycle. CENP-C (centromere protein C), a conserved inner kinetochore component, has been broadly characterized as a scaffolding protein and is required for the recruitment of multiple kinetochore proteins to the centromere. At its C terminus, CENP-C harbors a conserved cupin domain that has an established role in protein dimerization. Although the crystal structure of the Saccharomyces cerevisiae Mif2 CENP-C cupin domain has been determined, centromeric organization and kinetochore composition vary greatly between S. cerevisiae (point centromere) and other eukaryotes (regional centromere). Therefore, whether the structural and functional role of the cupin domain is conserved throughout evolution requires investigation. Here, we report the crystal structures of the Schizosaccharomyces pombe and Drosophila melanogaster CENP-C cupin domains at 2.52 and 1.81 Å resolutions, respectively. Although the central jelly roll architecture is conserved among the three determined CENP-C cupin domain structures, the cupin domains from organisms with regional centromeres contain additional structural features that aid in dimerization. Moreover, we found that the S. pombe Cnp3 CENP-C jelly roll fold harbors an inner binding pocket that is used to recruit the meiosis-specific protein Moa1. In summary, our results unveil the evolutionarily conserved and unique features of the CENP-C cupin domain and uncover the mechanism by which it functions as a recruitment factor.


    Organizational Affiliation

    Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan 48109 uhnsoo@med.umich.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Centromeric protein-C, isoform AA, B142Drosophila melanogasterMutation(s): 0 
Gene Names: 
UniProt
Find proteins for Q9VHP9 (Drosophila melanogaster)
Explore Q9VHP9 
Go to UniProtKB:  Q9VHP9
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.93α = 90
b = 61.72β = 90
c = 87.92γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
MOSFLMdata reduction
XDSdata reduction
AutoSolphasing
Cootmodel building
PHENIXrefinement

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data

  • Deposited Date: 2019-02-23 
  • Released Date: 2019-08-21 
  • Deposition Author(s): Chik, J.K., Cho, U.S.

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)United StatesR01-DK111465
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesT32-GM007315

Revision History  (Full details and data files)

  • Version 1.0: 2019-08-21
    Type: Initial release
  • Version 1.1: 2019-09-25
    Changes: Data collection, Database references
  • Version 1.2: 2019-10-02
    Changes: Data collection, Database references
  • Version 1.3: 2019-12-25
    Changes: Author supporting evidence