4OZQ | pdb_00004ozq

Crystal structure of the mouse Kif14 motor domain

• PDB DOI: https://doi.org/10.2210/pdb4OZQ/pdb

• Classification: MOTOR PROTEIN
• Organism(s): Escherichia coli UMEA 3304-1, Mus musculus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2014-02-18 Released: 2014-07-09 
• Deposition Author(s): Arora, K., Talje, L., Asenjo, A.B., Andersen, P., Atchia, K., Joshi, M., Sosa, H., Kwok, B.H., Allingham, J.S.
• Funding Organization(s): Canadian Institutes of Health

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.71 Å
• R-Value Free: 
  0.307 (Depositor), 0.286 (DCC) 
• R-Value Work: 
  0.264 (Depositor), 0.245 (DCC) 
• R-Value Observed: 
  0.266 (Depositor) 

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 Biology 426: 2997-3015

• PubMed: 24949858 
• DOI: https://doi.org/10.1016/j.jmb.2014.05.030
• Primary Citation 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. 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.
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.
Department of Physiology and Biophysics, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
Department of Biomedical and Molecular Sciences, Queen's University, 18 Stuart St., Rm. 652, Kingston, ON K7L 3 N6, Canada. Electronic address: [e-mail].
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: [e-mail].

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 159.93 kDa 
• Atom Count: 10,264 
• Modeled Residue Count: 1,370 
• Deposited Residue Count: 1,440 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chimera of Maltose-binding periplasmic protein and Kinesin family member 14 protein	A, B	720	Escherichia coli UMEA 3304-1, Mus musculus This entity is chimeric	Mutation(s): 0  Gene Names: G962_03763, Kif14
UniProt
Find proteins for L0N7N1 (Mus musculus) Explore L0N7N1  Go to UniProtKB:  L0N7N1

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ADP	C [auth A], E [auth B]	ADENOSINE-5'-DIPHOSPHATE C10 H15 N5 O10 P2 XTWYTFMLZFPYCI-KQYNXXCUSA-N
EDO	D [auth A], F [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.71 Å
• R-Value Free:  0.307 (Depositor), 0.286 (DCC) 
• R-Value Work:  0.264 (Depositor), 0.245 (DCC) 
• R-Value Observed: 0.266 (Depositor) 

Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 65.137	α = 74.43
b = 72.193	β = 87.45
c = 94.098	γ = 89.94

Software Package:

Software Name	Purpose
REFMAC	refinement

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2014-07-09 
Deposition Author(s): Arora, K., Talje, L., Asenjo, A.B., Andersen, P., Atchia, K., Joshi, M., Sosa, H., Kwok, B.H., Allingham, J.S.

---

Funding Organization	Location	Grant Number
Canadian Institutes of Health	Canada	--

Revision History  

• 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
• Version 1.3: 2023-12-27
  Changes: Advisory, Data collection, Database references, Derived calculations, Other, Refinement description, Source and taxonomy