5T6J

Structure of the MIND Complex Shows a Regulatory Focus of Yeast Kinetochore Assembly


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.225 

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Literature

Structure of the MIND Complex Defines a Regulatory Focus for Yeast Kinetochore Assembly.

Dimitrova, Y.N.Jenni, S.Valverde, R.Khin, Y.Harrison, S.C.

(2016) Cell 167: 1014-1027.e12

  • DOI: 10.1016/j.cell.2016.10.011
  • Primary Citation of Related Structures:  
    5T51, 5T59, 5T58, 5T6J

  • PubMed Abstract: 
  • Kinetochores connect centromeric nucleosomes with mitotic-spindle microtubules through conserved, cross-interacting protein subassemblies. In budding yeast, the heterotetrameric MIND complex (Mtw1, Nnf1, Nsl1, Dsn1), ortholog of the metazoan Mis12 complex, joins the centromere-proximal components, Mif2 and COMA, with the principal microtubule-binding component, the Ndc80 complex (Ndc80C) ...

    Kinetochores connect centromeric nucleosomes with mitotic-spindle microtubules through conserved, cross-interacting protein subassemblies. In budding yeast, the heterotetrameric MIND complex (Mtw1, Nnf1, Nsl1, Dsn1), ortholog of the metazoan Mis12 complex, joins the centromere-proximal components, Mif2 and COMA, with the principal microtubule-binding component, the Ndc80 complex (Ndc80C). We report the crystal structure of Kluyveromyces lactis MIND and examine its partner interactions, to understand the connection from a centromeric nucleosome to a much larger microtubule. MIND resembles an elongated, asymmetric Y; two globular heads project from a coiled-coil shaft. An N-terminal extension of Dsn1 from one head regulates interactions of the other head, blocking binding of Mif2 and COMA. Dsn1 phosphorylation by Ipl1/Aurora B relieves this autoinhibition, enabling MIND to join an assembling kinetochore. A C-terminal extension of Dsn1 recruits Ndc80C to the opposite end of the shaft. The structure and properties of MIND show how it integrates phospho-regulatory inputs for kinetochore assembly and disassembly.


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 250 Longwood Avenue, Boston, MA 02115, USA; Howard Hughes Medical Institute, 250 Longwood Avenue, Boston, MA 02115, USA. Electronic address: harrison@crystal.harvard.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Kinetochore protein SPC24A59Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SPC24YMR117CYM9718.16C
UniProt
Find proteins for Q04477 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q04477 
Go to UniProtKB:  Q04477
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Kinetochore protein SPC25B92Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SPC25YER018C
UniProt
Find proteins for P40014 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P40014 
Go to UniProtKB:  P40014
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Kinetochore-associated protein DSN1C13Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: DSN1YIR010WYIB10W
UniProt
Find proteins for P40568 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P40568 
Go to UniProtKB:  P40568
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.225 
  • Space Group: I 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.889α = 90
b = 85.889β = 90
c = 95.003γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-11-09
    Type: Initial release
  • Version 1.1: 2016-12-21
    Changes: Database references