Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 84255.00 
• Atom Count: 5431 
• Residue Count: 736 
• Unique protein chains: 1

4EGX

Crystal structure of KIF1A CC1-FHA tandem

• DOI: 10.2210/pdb4EGX/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2012-04-02 Released: 2012-10-03 
• Deposition Author(s): Yu, J., Huo, L., Yue, Y., Xu, T., Zhang, M., Feng, W.

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Experimental Data Snapshot

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

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

• PubMed: 22863567 
• DOI: 10.1016/j.str.2012.07.002
• Primary Citation of Related Structures:  
  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. 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.

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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
Molecule	Chains	Sequence Length	Organism	Details
Kinesin-like protein KIF1A	A, B, C, D	184	Homo sapiens	Mutation(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
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
GOL	A, D	GLYCEROL GLYCERIN; PROPANE-1,2,3-TRIOL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
PEG	A, C	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N

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 = 83.943	α = 90.00
b = 87.855	β = 90.00
c = 101.694	γ = 90.00

Software Package:

Software Name	Purpose
PHASER	phasing
HKL-2000	data collection
HKL-2000	data reduction
REFMAC	refinement
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-04-02 
• Released Date: 2012-10-03 
• Deposition Author(s): Yu, J., Huo, L., Yue, Y., Xu, T., Zhang, M., Feng, W.

Revision History 

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