4OZQ

Crystal structure of the mouse Kif14 motor domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.71 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.264 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

KIF14 binds tightly to microtubules and adopts a rigor-like conformation.

Arora, K.Talje, L.Asenjo, A.B.Andersen, P.Atchia, K.Joshi, M.Sosa, H.Allingham, J.S.Kwok, B.H.

(2014) J.Mol.Biol. 426: 2997-3015

  • DOI: 10.1016/j.jmb.2014.05.030

  • PubMed Abstract: 
  • The mitotic kinesin motor protein KIF14 is essential for cytokinesis during cell division and has been implicated in cerebral development and a variety of human cancers. Here we show that the mouse KIF14 motor domain binds tightly to microtubules and ...

    The mitotic kinesin motor protein KIF14 is essential for cytokinesis during cell division and has been implicated in cerebral development and a variety of human cancers. Here we show that the mouse KIF14 motor domain binds tightly to microtubules and does not display typical nucleotide-dependent changes in this affinity. It also has robust ATPase activity but very slow motility. A crystal structure of the ADP-bound form of the KIF14 motor domain reveals a dramatically opened ATP-binding pocket, as if ready to exchange its bound ADP for Mg·ATP. In this state, the central β-sheet is twisted ~10° beyond the maximal amount observed in other kinesins. This configuration has only been seen in the nucleotide-free states of myosins-known as the "rigor-like" state. Fitting of this atomic model to electron density maps from cryo-electron microscopy indicates a distinct binding configuration of the motor domain to microtubules. We postulate that these properties of KIF14 are well suited for stabilizing midbody microtubules during cytokinesis.


    Organizational Affiliation

    Department of Biomedical and Molecular Sciences, Queen's University, 18 Stuart St., Rm. 652, Kingston, ON K7L 3 N6, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chimera of Maltose-binding periplasmic protein and Kinesin family member 14 protein
A, B
720N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
A, B
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A, B
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.71 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.264 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 65.137α = 74.43
b = 72.193β = 87.45
c = 94.098γ = 89.94
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Canadian Institutes of HealthCanada--

Revision History 

  • Version 1.0: 2014-07-09
    Type: Initial release
  • Version 1.1: 2014-10-01
    Type: Database references
  • Version 1.2: 2015-02-04
    Type: Derived calculations