3J2U

Kinesin-13 KLP10A HD in complex with CS-tubulin and a microtubule


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 10.8 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural model for tubulin recognition and deformation by Kinesin-13 microtubule depolymerases.

Asenjo, A.B.Chatterjee, C.Tan, D.Depaoli, V.Rice, W.J.Diaz-Avalos, R.Silvestry, M.Sosa, H.

(2013) Cell Rep 3: 759-768

  • DOI: 10.1016/j.celrep.2013.01.030

  • PubMed Abstract: 
  • To elucidate the structural basis of the mechanism of microtubule depolymerization by kinesin-13s, we analyzed complexes of tubulin and the Drosophila melanogaster kinesin-13 KLP10A by electron microscopy (EM) and fluorescence polarization microscopy ...

    To elucidate the structural basis of the mechanism of microtubule depolymerization by kinesin-13s, we analyzed complexes of tubulin and the Drosophila melanogaster kinesin-13 KLP10A by electron microscopy (EM) and fluorescence polarization microscopy. We report a nanometer-resolution (1.1 nm) cryo-EM three-dimensional structure of the KLP10A head domain (KLP10AHD) bound to curved tubulin. We found that binding of KLP10AHD induces a distinct tubulin configuration with displacement (shear) between tubulin subunits in addition to curvature. In this configuration, the kinesin-binding site differs from that in straight tubulin, providing an explanation for the distinct interaction modes of kinesin-13s with the microtubule lattice or its ends. The KLP10AHD-tubulin interface comprises three areas of interaction, suggesting a crossbow-type tubulin-bending mechanism. These areas include the kinesin-13 family conserved KVD residues, and as predicted from the crossbow model, mutating these residues changes the orientation and mobility of KLP10AHDs interacting with the microtubule.


    Organizational Affiliation

    Department of Physiology and Biophysics, Albert Einstein College of Medicine, Bronx, NY 10461, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Kinesin-like protein Klp10A
K
374Drosophila melanogasterMutation(s): 0 
Gene Names: Klp10A
Find proteins for Q960Z0 (Drosophila melanogaster)
Go to UniProtKB:  Q960Z0
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Tubulin alpha-1A chain
A, C
451Bos taurusMutation(s): 0 
Find proteins for P81947 (Bos taurus)
Go to UniProtKB:  P81947
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Tubulin beta-2B chain
B, D
445Bos taurusMutation(s): 0 
Gene Names: TUBB2B
Find proteins for Q6B856 (Bos taurus)
Go to Gene View: TUBB2B
Go to UniProtKB:  Q6B856
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 10.8 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-03-06
    Type: Initial release
  • Version 1.1: 2013-04-10
    Type: Database references