4EGX

Crystal structure of KIF1A CC1-FHA tandem


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.51 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.252 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

The CC1-FHA Tandem as a Central Hub for Controlling the Dimerization and Activation of Kinesin-3 KIF1A

Huo, L.Yue, Y.Ren, J.Yu, J.Liu, J.Yu, Y.Ye, F.Xu, T.Zhang, M.Feng, W.

(2012) Structure 20: 1550-1561

  • DOI: 10.1016/j.str.2012.07.002
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Kinesin-3 KIF1A plays prominent roles in axonal transport and synaptogenesis. KIF1A adopts a monomeric form in vitro but acts as a processive dimer in vivo. The mechanism underlying the motor dimerization is poorly understood. Here, we find that the ...

    Kinesin-3 KIF1A plays prominent roles in axonal transport and synaptogenesis. KIF1A adopts a monomeric form in vitro but acts as a processive dimer in vivo. The mechanism underlying the motor dimerization is poorly understood. Here, we find that the CC1-FHA tandem of KIF1A exists as a stable dimer. The structure of CC1-FHA reveals that the linker between CC1 and FHA unexpectedly forms a β-finger hairpin, which integrates CC1 with FHA assembling a CC1-FHA homodimer. More importantly, dissociation of the CC1-FHA dimer unleashes CC1 and the β-finger, which are both essential for the motor inhibition. Thus, dimerization of the CC1-FHA tandem not only promotes the KIF1A dimer formation but also may trigger the motor activity via sequestering the CC1/β-finger region. The CC1-FHA tandem likely functions as a hub for controlling the dimerization and activation of KIF1A, which may represent a new paradigm for the kinesin regulation shared by other kinesin-3 motors.


    Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Beijing 100101, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Kinesin-like protein KIF1A
A, B, C, D
184Homo sapiensMutation(s): 0 
Gene Names: KIF1A (ATSV, C2orf20)
Find proteins for Q12756 (Homo sapiens)
Go to Gene View: KIF1A
Go to UniProtKB:  Q12756
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, D
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

Download SDF File 
Download CCD File 
A, C
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.51 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.252 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 83.943α = 90.00
b = 87.855β = 90.00
c = 101.694γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data collection
HKL-2000data reduction
REFMACrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-03
    Type: Initial release