3VZA

Crystal structure of the chicken Spc24-Spc25 globular domain in complex with CENP-T peptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.170 

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Literature

CENP-T provides a structural platform for outer kinetochore assembly

Nishino, T., Rago, F., Hori, T., Tomii, K., Cheeseman, I.M., Fukagawa, T.

(2013) EMBO J 32: 424-436

  • DOI: 10.1038/emboj.2012.348
  • Primary Citation of Related Structures:  
    3VZ9, 3VZA

  • PubMed Abstract: 

    • The kinetochore forms a dynamic interface with microtubules from the mitotic spindle during mitosis. The Ndc80 complex acts as the key microtubule-binding complex at kinetochores. However, it is unclear how the Ndc80 complex associates with the inner kinetochore proteins that assemble upon centromeric chromatin ...

    The kinetochore forms a dynamic interface with microtubules from the mitotic spindle during mitosis. The Ndc80 complex acts as the key microtubule-binding complex at kinetochores. However, it is unclear how the Ndc80 complex associates with the inner kinetochore proteins that assemble upon centromeric chromatin. Here, based on a high-resolution structural analysis, we demonstrate that the N-terminal region of vertebrate CENP-T interacts with the 'RWD' domain in the Spc24/25 portion of the Ndc80 complex. Phosphorylation of CENP-T strengthens a cryptic hydrophobic interaction between CENP-T and Spc25 resulting in a phospho-regulated interaction that occurs without direct recognition of the phosphorylated residue. The Ndc80 complex interacts with both CENP-T and the Mis12 complex, but we find that these interactions are mutually exclusive, supporting a model in which two distinct pathways target the Ndc80 complex to kinetochores. Our results provide a model for how the multiple protein complexes at kinetochores associate in a phospho-regulated manner.

    Organizational Affiliation: 

    Department of Molecular Genetics, National Institute of Genetics and The Graduate University for Advanced Studies SOKENDAI, Shizuoka 411-8540, Japan.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Uncharacterized proteinC [auth A],
A [auth B]		105Gallus gallusMutation(s): 0 
Gene Names: SPC25
UniProt
Find proteins for E1C4Y2 (Gallus gallus)
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Go to UniProtKB:  E1C4Y2
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UniProt GroupE1C4Y2
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Spc24 proteinD [auth C],
B [auth D]		73Gallus gallusMutation(s): 0 
UniProt
Find proteins for R4GRT4 (Gallus gallus)
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UniProt GroupR4GRT4
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Centromere protein TE, F39Gallus gallusMutation(s): 2 
Gene Names: CENPT
UniProt
Find proteins for F1NPG5 (Gallus gallus)
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Go to UniProtKB:  F1NPG5
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UniProt GroupF1NPG5
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.170 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.321α = 90
b = 61.321β = 90
c = 111.275γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-04-03
    Type: Initial release