2QUQ

Crystal Structure of the Essential Inner Kinetochore Protein Cep3p


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the yeast inner kinetochore subunit Cep3p.

Bellizzi, J.J.Sorger, P.K.Harrison, S.C.

(2007) Structure 15: 1422-1430

  • DOI: 10.1016/j.str.2007.09.008

  • PubMed Abstract: 
  • In budding yeast, the four-protein CBF3 complex (Skp1p-Ctf13p-Cep3p-Ndc10p) initiates kinetochore assembly by binding to the CDEIII locus of centromeric DNA. A Cep3p dimer recruits a Skp1p-Ctf13p heterodimer and contacts two sites on CDEIII. We repor ...

    In budding yeast, the four-protein CBF3 complex (Skp1p-Ctf13p-Cep3p-Ndc10p) initiates kinetochore assembly by binding to the CDEIII locus of centromeric DNA. A Cep3p dimer recruits a Skp1p-Ctf13p heterodimer and contacts two sites on CDEIII. We report here the crystal structure, determined at 2.8 A resolution by multiple isomorphous replacement with anomalous scattering, of a truncated Cep3p (Cep3p [47-608]), comprising all but an N-terminal, Zn(2)Cys(6)-cluster, DNA-binding module. Cep3p has a well-ordered structure throughout essentially all of its polypeptide chain, unlike most yeast transcription factors, including those with Zn(2)Cys(6) clusters, such as Gal4p. This difference may reflect an underlying functional distinction: whereas any particular transcription factor must adapt to a variety of upstream activating sites, Cep3p scaffolds kinetochore assembly on centromeres uniformly configured on all 16 yeast chromosomes. We have, using the structure of Cep3p (47-608) and the known structures of Zn(2)Cys(6)-cluster domains, modeled the interaction of Cep3p with CDEIII.


    Organizational Affiliation

    Jack and Eileen Connors Laboratory of Structural Biology, Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Centromere DNA-binding protein complex CBF3 subunit B
A
562Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: CEP3 (CBF3, CBF3B, CSL1)
Find proteins for P40969 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P40969
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.228 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 84.629α = 90.00
b = 84.629β = 90.00
c = 230.948γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
ADSCdata collection
CNSrefinement
HKL-2000data reduction
DENZOdata reduction
SOLOMONphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-11-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-10-25
    Type: Refinement description