6MJC

Structure of Candida glabrata Csm1:Dsn1(43-67DD) complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The molecular basis of monopolin recruitment to the kinetochore.

Plowman, R.Singh, N.Tromer, E.C.Payan, A.Duro, E.Spanos, C.Rappsilber, J.Snel, B.Kops, G.J.P.L.Corbett, K.D.Marston, A.L.

(2019) Chromosoma 128: 331-354

  • DOI: 10.1007/s00412-019-00700-0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The monopolin complex is a multifunctional molecular crosslinker, which in S. pombe binds and organises mitotic kinetochores to prevent aberrant kinetochore-microtubule interactions. In the budding yeast S. cerevisiae, whose kinetochores bind a singl ...

    The monopolin complex is a multifunctional molecular crosslinker, which in S. pombe binds and organises mitotic kinetochores to prevent aberrant kinetochore-microtubule interactions. In the budding yeast S. cerevisiae, whose kinetochores bind a single microtubule, the monopolin complex crosslinks and mono-orients sister kinetochores in meiosis I, enabling the biorientation and segregation of homologs. Here, we show that both the monopolin complex subunit Csm1 and its binding site on the kinetochore protein Dsn1 are broadly distributed throughout eukaryotes, suggesting a conserved role in kinetochore organisation and function. We find that budding yeast Csm1 binds two conserved motifs in Dsn1, one (termed Box 1) representing the ancestral, widely conserved monopolin binding motif and a second (termed Box 2-3) with a likely role in enforcing specificity of sister kinetochore crosslinking. We find that Box 1 and Box 2-3 bind the same conserved hydrophobic cavity on Csm1, suggesting competition or handoff between these motifs. Using structure-based mutants, we also find that both Box 1 and Box 2-3 are critical for monopolin function in meiosis. We identify two conserved serine residues in Box 2-3 that are phosphorylated in meiosis and whose mutation to aspartate stabilises Csm1-Dsn1 binding, suggesting that regulated phosphorylation of these residues may play a role in sister kinetochore crosslinking specificity. Overall, our results reveal the monopolin complex as a broadly conserved kinetochore organiser in eukaryotes, which budding yeast have co-opted to mediate sister kinetochore crosslinking through the addition of a second, regulatable monopolin binding interface.


    Organizational Affiliation

    Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, 92093, USA.,Wellcome Centre for Cell Biology, School of Biological Sciences, University of Edinburgh, Max Born Crescent, Edinburgh, EH9 3BF, UK. adele.marston@ed.ac.uk.,Department of Biochemistry, University of Cambridge, Cambridge, UK.,Department of Chemistry, University of California, San Diego, La Jolla, CA, 92093, USA. kcorbett@ucsd.edu.,Institute of Biotechnology, Technische Universität Berlin, Berlin, Germany.,University Medical Centre Utrecht, Utrecht, The Netherlands.,Department of Chemistry, University of California, San Diego, La Jolla, CA, 92093, USA.,Oncode Institute, Hubrecht Institute-KNAW (Royal Netherlands Academy of Arts and Sciences), Utrecht, The Netherlands.,Wellcome Centre for Cell Biology, School of Biological Sciences, University of Edinburgh, Max Born Crescent, Edinburgh, EH9 3BF, UK.,Ludwig Institute for Cancer Research, San Diego Branch, La Jolla, CA, 92093, USA.,Synthorx Inc., 11099 North Torrey Pines Road, Suite 290, La Jolla, CA, 92037, USA.,Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, 92093, USA. kcorbett@ucsd.edu.,Theoretical Biology and Bioinformatics, Biology, Science Faculty, Utrecht University, Utrecht, The Netherlands.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Monopolin complex subunit CSM1
A
116Candida glabrata (strain ATCC 2001 / CBS 138 / JCM 3761 / NBRC 0622 / NRRL Y-65)Mutation(s): 0 
Find proteins for Q6FVN3 (Candida glabrata (strain ATCC 2001 / CBS 138 / JCM 3761 / NBRC 0622 / NRRL Y-65))
Go to UniProtKB:  Q6FVN3
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Kinetochore-associated protein DSN1
B
28Candida glabrata (strain ATCC 2001 / CBS 138 / JCM 3761 / NBRC 0622 / NRRL Y-65)Mutation(s): 2 
Find proteins for Q6FKQ5 (Candida glabrata (strain ATCC 2001 / CBS 138 / JCM 3761 / NBRC 0622 / NRRL Y-65))
Go to UniProtKB:  Q6FKQ5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.199 
  • Space Group: H 3 2
  • Diffraction Data DOI: 
    10.15785/SBGRID/609 SBGrid
Unit Cell:
Length (Å)Angle (°)
a = 105.057α = 90.00
b = 105.057β = 90.00
c = 125.121γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
PHENIXrefinement
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM104141

Revision History 

  • Version 1.0: 2018-11-07
    Type: Initial release
  • Version 1.1: 2019-05-22
    Type: Data collection, Database references
  • Version 1.2: 2019-11-13
    Type: Data collection, Database references
  • Version 1.3: 2020-01-01
    Type: Author supporting evidence