3J8X

High-resolution structure of no-nucleotide kinesin on microtubules


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.00 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

High-resolution structures of kinesin on microtubules provide a basis for nucleotide-gated force-generation.

Shang, Z.Zhou, K.Xu, C.Csencsits, R.Cochran, J.C.Sindelar, C.V.

(2014) Elife 3: e04686-e04686

  • DOI: https://doi.org/10.7554/eLife.04686
  • Primary Citation of Related Structures:  
    3J8X, 3J8Y

  • PubMed Abstract: 

    Microtubule-based transport by the kinesin motors, powered by ATP hydrolysis, is essential for a wide range of vital processes in eukaryotes. We obtained insight into this process by developing atomic models for no-nucleotide and ATP states of the monomeric kinesin motor domain on microtubules from cryo-EM reconstructions at 5-6 Å resolution. By comparing these models with existing X-ray structures of ADP-bound kinesin, we infer a mechanistic scheme in which microtubule attachment, mediated by a universally conserved 'linchpin' residue in kinesin (N255), triggers a clamshell opening of the nucleotide cleft and accompanying release of ADP. Binding of ATP re-closes the cleft in a manner that tightly couples to translocation of cargo, via kinesin's 'neck linker' element. These structural transitions are reminiscent of the analogous nucleotide-exchange steps in the myosin and F1-ATPase motors and inform how the two heads of a kinesin dimer 'gate' each other to promote coordinated stepping along microtubules.


  • Organizational Affiliation

    Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Kinesin-1 heavy chainA [auth K]349Homo sapiensMutation(s): 0 
Gene Names: KIF5BKNSKNS1
UniProt & NIH Common Fund Data Resources
Find proteins for P33176 (Homo sapiens)
Explore P33176 
Go to UniProtKB:  P33176
PHAROS:  P33176
GTEx:  ENSG00000170759 
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UniProt GroupP33176
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Tubulin alpha-1B chainB [auth A]451Sus scrofaMutation(s): 0 
EC: 3.6.5
UniProt
Find proteins for Q2XVP4 (Sus scrofa)
Explore Q2XVP4 
Go to UniProtKB:  Q2XVP4
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UniProt GroupQ2XVP4
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Tubulin beta-2B chainC [auth B]445Sus scrofaMutation(s): 0 
UniProt
Find proteins for F2Z5B2 (Sus scrofa)
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Go to UniProtKB:  F2Z5B2
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UniProt GroupF2Z5B2
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.00 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONFREALIGN
RECONSTRUCTIONSPIDER

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-10
    Type: Initial release
  • Version 1.1: 2015-06-03
    Changes: Database references
  • Version 1.2: 2018-07-18
    Changes: Author supporting evidence, Data collection
  • Version 1.3: 2024-02-21
    Changes: Data collection, Database references, Derived calculations, Refinement description