6FC5

Bik1 CAP-Gly domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.88 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Structure-Function Relationship of the Bik1-Bim1 Complex.

Stangier, M.M.Kumar, A.Chen, X.Farcas, A.M.Barral, Y.Steinmetz, M.O.

(2018) Structure 26: 607-618.e4

  • DOI: https://doi.org/10.1016/j.str.2018.03.003
  • Primary Citation of Related Structures:  
    6FC5, 6FC6

  • PubMed Abstract: 

    In budding yeast, the microtubule plus-end tracking proteins Bik1 (CLIP-170) and Bim1 (EB1) form a complex that interacts with partners involved in spindle positioning, including Stu2 and Kar9. Here, we show that the CAP-Gly and coiled-coil domains of Bik1 interact with the C-terminal ETF peptide of Bim1 and the C-terminal tail region of Stu2, respectively. The crystal structures of the CAP-Gly domain of Bik1 (Bik1CG) alone and in complex with an ETF peptide revealed unique, functionally relevant CAP-Gly elements, establishing Bik1CG as a specific C-terminal phenylalanine recognition domain. Unlike the mammalian CLIP-170-EB1 complex, Bik1-Bim1 forms ternary complexes with the EB1-binding motifs SxIP and LxxPTPh, which are present in diverse proteins, including Kar9. Perturbation of the Bik1-Bim1 interaction in vivo affected Bik1 localization and astral microtubule length. Our results provide insight into the role of the Bik1-Bim1 interaction for cell division, and demonstrate that the CLIP-170-EB1 module is evolutionarily flexible.


  • Organizational Affiliation

    Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Microtubule-associated protein102Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: BIK1SCKG_5419
UniProt
Find proteins for P11709 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P11709 
Go to UniProtKB:  P11709
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP11709
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.88 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.170 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.663α = 90
b = 53.663β = 90
c = 61.39γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerland31003A_166608
SystemsX.chSwitzerlandRTD-TubeX
Marie CurieSwitzerlandCOFUND fellowship

Revision History  (Full details and data files)

  • Version 1.0: 2018-04-11
    Type: Initial release