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 
  • R-Value Observed: 0.266 

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Ligand Structure Quality Assessment 


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
  • Primary Citation of Related Structures:  
    4OZQ

  • 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 does not display typical nucleotide-dependent changes in this affinity ...

    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

    Institute for Research in Immunology and Cancer, Département de Médecine, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montréal, QC H3C 3 J7, Canada. Electronic address: benjamin.kwok@umontreal.ca.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Chimera of Maltose-binding periplasmic protein and Kinesin family member 14 proteinA, B720Escherichia coli UMEA 3304-1Mus musculus
This entity is chimeric
Mutation(s): 0 
Gene Names: G962_03763Kif14
UniProt
Find proteins for L0N7N1 (Mus musculus)
Explore L0N7N1 
Go to UniProtKB:  L0N7N1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupL0N7N1
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download Ideal Coordinates CCD File 
C [auth A],
E [auth B]
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
EDO
Query on EDO

Download Ideal Coordinates CCD File 
D [auth A],
F [auth B]
1,2-ETHANEDIOL
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 
  • R-Value Observed: 0.266 
  • 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

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Ligand Structure Quality Assessment 



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Canadian Institutes of HealthCanada--

Revision History  (Full details and data files)

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