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 
  • R-Value Observed: 0.253 

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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:  
    4EGX, 4EJQ

  • 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 CC1-FHA tandem of KIF1A exists as a stable dimer ...

    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: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Kinesin-like protein KIF1AA, B, C, D184Homo sapiensMutation(s): 0 
Gene Names: KIF1A, ATSV, C2orf20
UniProt & NIH Common Fund Data Resources
Find proteins for Q12756 (Homo sapiens)
Explore Q12756 
Go to UniProtKB:  Q12756
PHAROS:  Q12756
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ12756
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PEG
Query on PEG
Download Ideal Coordinates CCD File 
E [auth A],
G [auth C]		DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
F [auth A],
H [auth D]		GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-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 
  • R-Value Observed: 0.253 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 83.943α = 90
b = 87.855β = 90
c = 101.694γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

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