3ZFC

Crystal Structure of the Kif4 Motor Domain Complexed With Mg-AMPPNP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.171 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Basis for the ATP-Induced Isomerization of Kinesin.

Chang, Q.Nitta, R.Inoue, S.Hirokawa, N.

(2013) J.Mol.Biol. 425: 1869

  • DOI: 10.1016/j.jmb.2013.03.004
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Kinesin superfamily proteins (KIFs) are microtubule-based molecular motors driven by the energy derived from the hydrolysis of ATP. Previous studies have revealed that the ATP binding step is crucial both for the power stroke to produce motility and ...

    Kinesin superfamily proteins (KIFs) are microtubule-based molecular motors driven by the energy derived from the hydrolysis of ATP. Previous studies have revealed that the ATP binding step is crucial both for the power stroke to produce motility and for the inter-domain regulation of ATPase activity to guarantee the processive movement of dimeric KIFs. Here, we report the first crystal structure of KIF4 complexed with the non-hydrolyzable ATP analog, AMPPNP (adenylyl imidodiphosphate), at 1.7Å resolution. By combining our structure with previously solved KIF1A structures complexed with two ATP analogs, molecular snapshots during ATP binding reveal that the closure of the nucleotide-binding pocket during ATP binding is achieved by closure of the backdoor. Closure of the backdoor stabilizes two mobile regions, switch I and switch II, to generate the phosphate tube from which hydrolyzed phosphate is released. Through the stabilization of switch II, the local conformational change at the catalytic center is further relayed to the neck-linker element that fully docks to the catalytic core to produce the power stroke. Because the neck linker is a sole element that connects the partner heads in dimeric KIFs, this tight structural coordination between the catalytic center and neck linker enables inter-domain communication between the partner heads. This study also revealed the putative microtubule-binding site of KIF4, thus providing structural insights that describe the specific binding of KIF4 to the microtubule.


    Organizational Affiliation

    Department of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, Hongo, Tokyo 113-0033, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHROMOSOME-ASSOCIATED KINESIN KIF4
A
350Mus musculusMutation(s): 0 
Gene Names: Kif4 (Kif4a, Kns4)
Find proteins for P33174 (Mus musculus)
Go to UniProtKB:  P33174
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ANP
Query on ANP

Download SDF File 
Download CCD File 
A
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.171 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 61.952α = 90.00
b = 61.952β = 90.00
c = 166.367γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
MOLREPphasing
SCALAdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-03-20
    Type: Initial release
  • Version 1.1: 2013-04-03
    Type: Database references
  • Version 1.2: 2013-05-29
    Type: Database references