4E61

Crystal structure of the EB1-like motif of Bim1p


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.211 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Post-translational Modifications Regulate Assembly of Early Spindle Orientation Complex in Yeast.

Huls, D.Storchova, Z.Niessing, D.

(2012) J Biol Chem 287: 16238-16245

  • DOI: 10.1074/jbc.M112.347872
  • Primary Citation of Related Structures:  
    4E61

  • PubMed Abstract: 
  • Mitosis begins with the tethering of chromosomes to the mitotic spindle and their orientation perpendicular to the axis of cell division. In budding yeast, mitotic spindle orientation and the subsequent chromosome segregation are two independent processes ...

    Mitosis begins with the tethering of chromosomes to the mitotic spindle and their orientation perpendicular to the axis of cell division. In budding yeast, mitotic spindle orientation and the subsequent chromosome segregation are two independent processes. Early spindle orientation is driven by the actin-bound myosin Myo2p, which interacts with the adapter Kar9p. The latter also binds to microtubule-associated Bim1p, thereby connecting both types of cytoskeleton. This study focuses on the interaction between Kar9p and Bim1p and its regulation. We solved the crystal structure of the previously reported Kar9p-binding motif of Bim1p and identified a second, novel Kar9p interaction domain. We further show that two independent post-translational modification events regulate their interaction. Whereas Kar9p sumoylation is required for efficient complex formation with Bim1p, Aurora B/Ipl1p-dependent phosphorylation of Bim1p down-regulates their interaction. The observed effects of these modifications allow us to propose a novel regulatory framework for the assembly and disassembly of the early spindle orientation complex.


    Organizational Affiliation

    Institute of Structural Biology, Helmholtz Zentrum München-German Research Center for Environmental Health, 85764 Neuherberg, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein BIM1A, B106Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: BIM1YER016W
UniProt
Find proteins for P40013 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P40013 
Go to UniProtKB:  P40013
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.211 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 28α = 90
b = 42.5β = 90.3
c = 100.5γ = 90
Software Package:
Software NamePurpose
XCUBEdata collection
SHELXmodel building
SHELXDphasing
SHELXEmodel building
BUSTER-TNTrefinement
XDSdata reduction
XSCALEdata scaling
SHELXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-04-11
    Type: Initial release
  • Version 1.1: 2012-06-13
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Refinement description