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: 8.30 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: https://doi.org/10.1016/j.molcel.2012.06.025
  • Primary Citation of Related Structures:  
    4ATU, 4ATX

  • 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 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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TUBULIN BETA-2B CHAIN
A, C, E, G
445Bos taurusMutation(s): 0 
EC: 3.6.5.6
UniProt
Find proteins for Q6B856 (Bos taurus)
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Go to UniProtKB:  Q6B856
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UniProt GroupQ6B856
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
TUBULIN ALPHA-1D CHAIN
B, D, F, H
452Bos taurusMutation(s): 0 
EC: 3.6.5.6
UniProt
Find proteins for Q2HJ86 (Bos taurus)
Explore Q2HJ86 
Go to UniProtKB:  Q2HJ86
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UniProt GroupQ2HJ86
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
NEURONAL MIGRATION PROTEIN DOUBLECORTIN373Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for O43602 (Homo sapiens)
Explore O43602 
Go to UniProtKB:  O43602
PHAROS:  O43602
GTEx:  ENSG00000077279 
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UniProt GroupO43602
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.30 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONFREALIGN
RECONSTRUCTIONSPIDER

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

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