4ATU

Human doublecortin N-DC repeat plus linker, and tubulin (2XRP) docked into an 8A cryo-EM map of doublecortin-stabilised microtubules reconstructed in absence of kinesin

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.3 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Molecular Basis for Specific Regulation of Neuronal Kinesin- 3 Motors by Doublecortin Family Proteins.

Liu, J.S., Schubert, C.R., Fu, X., Fourniol, F.J., Jaiswal, J.K., Houdusse, A., Stultz, C.M., Moores, C.A., Walsh, C.A.

(2012) Mol.Cell 47: 707

  • DOI: 10.1016/j.molcel.2012.06.025
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • Doublecortin (Dcx) defines a growing family of microtubule (MT)-associated proteins (MAPs) involved in neuronal migration and process outgrowth. We show that Dcx is essential for the function of Kif1a, a kinesin-3 motor protein that traffics synaptic ...

    Doublecortin (Dcx) defines a growing family of microtubule (MT)-associated proteins (MAPs) involved in neuronal migration and process outgrowth. We show that Dcx is essential for the function of Kif1a, a kinesin-3 motor protein that traffics synaptic vesicles. Neurons lacking Dcx and/or its structurally conserved paralogue, doublecortin-like kinase 1 (Dclk1), show impaired Kif1a-mediated transport of Vamp2, a cargo of Kif1a, with decreased run length. Human disease-associated mutations in Dcx's linker sequence (e.g., W146C, K174E) alter Kif1a/Vamp2 transport by disrupting Dcx/Kif1a interactions without affecting Dcx MT binding. Dcx specifically enhances binding of the ADP-bound Kif1a motor domain to MTs. Cryo-electron microscopy and subnanometer-resolution image reconstruction reveal the kinesin-dependent conformational variability of MT-bound Dcx and suggest a model for MAP-motor crosstalk on MTs. Alteration of kinesin run length by MAPs represents a previously undiscovered mode of control of kinesin transport and provides a mechanism for regulation of MT-based transport by local signals.

    Organizational Affiliation: 

    Center for Neuroscience Research, Children's National Medical Center, Washington, DC 20010, USA. jliu@cnmcresearch.org




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TUBULIN BETA-2B CHAIN
A, C, E, G
445Bos taurusMutation(s): 0 
Gene Names: TUBB2B
Find proteins for Q6B856 (Bos taurus)
Go to Gene View: TUBB2B
Go to UniProtKB:  Q6B856
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TUBULIN ALPHA-1D CHAIN
B, D, F, H
452Bos taurusMutation(s): 0 
Gene Names: TUBA1D
Find proteins for Q2HJ86 (Bos taurus)
Go to UniProtKB:  Q2HJ86
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
NEURONAL MIGRATION PROTEIN DOUBLECORTIN
I
373Homo sapiensMutation(s): 0 
Gene Names: DCX (DBCN, LISX)
Find proteins for O43602 (Homo sapiens)
Go to Gene View: DCX
Go to UniProtKB:  O43602
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP
Download SDF File 
Download CCD File 
A, C, E, G
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
GTP
Query on GTP
Download SDF File 
Download CCD File 
B, D, F, H
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.3 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-09-26
    Type: Initial release
  • Version 1.1: 2017-08-23
    Type: Data collection, Refinement description
  • Version 1.2: 2018-06-20
    Type: Data collection, Derived calculations