5M9E

Interactions between the Mal3 EB1-like domain and Dis1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.83 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.266 
  • R-Value Observed: 0.269 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

An unconventional interaction between Dis1/TOG and Mal3/EB1 in fission yeast promotes the fidelity of chromosome segregation.

Matsuo, Y.Maurer, S.P.Yukawa, M.Zakian, S.Singleton, M.R.Surrey, T.Toda, T.

(2016) J Cell Sci 129: 4592-4606

  • DOI: https://doi.org/10.1242/jcs.197533
  • Primary Citation of Related Structures:  
    5M97, 5M9E

  • PubMed Abstract: 

    Dynamic microtubule plus-ends interact with various intracellular target regions such as the cell cortex and the kinetochore. Two conserved families of microtubule plus-end-tracking proteins, the XMAP215, ch-TOG or CKAP5 family and the end-binding 1 (EB1, also known as MAPRE1) family, play pivotal roles in regulating microtubule dynamics. Here, we study the functional interplay between fission yeast Dis1, a member of the XMAP215/TOG family, and Mal3, an EB1 protein. Using an in vitro microscopy assay, we find that purified Dis1 autonomously tracks growing microtubule ends and is a bona fide microtubule polymerase. Mal3 recruits additional Dis1 to microtubule ends, explaining the synergistic enhancement of microtubule dynamicity by these proteins. A non-canonical binding motif in Dis1 mediates the interaction with Mal3. X-ray crystallography shows that this new motif interacts in an unconventional configuration with the conserved hydrophobic cavity formed within the Mal3 C-terminal region that typically interacts with the canonical SXIP motif. Selectively perturbing the Mal3-Dis1 interaction in living cells demonstrates that it is important for accurate chromosome segregation. Whereas, in some metazoans, the interaction between EB1 and the XMAP215/TOG family members requires an additional binding partner, fission yeast relies on a direct interaction, indicating evolutionary plasticity of this critical interaction module.


  • Organizational Affiliation

    Synthetic and Systems Biochemistry of the Microtubule Cytoskeleton Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Microtubule integrity protein mal3
A, B, C, D
77Schizosaccharomyces pombe 972h-Mutation(s): 0 
Gene Names: mal3SPAC18G6.15
UniProt
Find proteins for Q10113 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Explore Q10113 
Go to UniProtKB:  Q10113
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ10113
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Phosphoprotein p93
E, F, G, H
20Schizosaccharomyces pombe 972h-Mutation(s): 0 
UniProt
Find proteins for Q09933 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Explore Q09933 
Go to UniProtKB:  Q09933
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ09933
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.83 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.266 
  • R-Value Observed: 0.269 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 93.305α = 90
b = 93.305β = 90
c = 196.545γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
xia2data reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Cancer Research UKUnited KingdomFC001155
Wellcome TrustUnited KingdomFC001155
Medical Research Council (United Kingdom)United KingdomFC001155

Revision History  (Full details and data files)

  • Version 1.0: 2016-12-07
    Type: Initial release
  • Version 1.1: 2016-12-28
    Changes: Database references
  • Version 1.2: 2017-08-30
    Changes: Author supporting evidence
  • Version 1.3: 2024-01-17
    Changes: Data collection, Database references, Refinement description