Kinesin binding protein (KBP)

Experimental Data Snapshot

  • Resolution: 4.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report

This is version 1.1 of the entry. See complete history


The mechanism of kinesin inhibition by kinesin-binding protein.

Atherton, J.Hummel, J.J.Olieric, N.Locke, J.Pena, A.Rosenfeld, S.S.Steinmetz, M.O.Hoogenraad, C.C.Moores, C.A.

(2020) Elife 9

  • DOI: https://doi.org/10.7554/eLife.61481
  • Primary Citation of Related Structures:  
    6ZPG, 6ZPH, 6ZPI

  • PubMed Abstract: 

    Subcellular compartmentalisation is necessary for eukaryotic cell function. Spatial and temporal regulation of kinesin activity is essential for building these local environments via control of intracellular cargo distribution. Kinesin-binding protein (KBP) interacts with a subset of kinesins via their motor domains, inhibits their microtubule (MT) attachment, and blocks their cellular function. However, its mechanisms of inhibition and selectivity have been unclear. Here we use cryo-electron microscopy to reveal the structure of KBP and of a KBP-kinesin motor domain complex. KBP is a tetratricopeptide repeat-containing, right-handed α-solenoid that sequesters the kinesin motor domain's tubulin-binding surface, structurally distorting the motor domain and sterically blocking its MT attachment. KBP uses its α-solenoid concave face and edge loops to bind the kinesin motor domain, and selected structure-guided mutations disrupt KBP inhibition of kinesin transport in cells. The KBP-interacting motor domain surface contains motifs exclusively conserved in KBP-interacting kinesins, suggesting a basis for kinesin selectivity.

  • Organizational Affiliation

    Randall Centre for Cell and Molecular Biophysics, King's College, London, United Kingdom.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
KIF-binding protein621Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q96EK5 (Homo sapiens)
Explore Q96EK5 
Go to UniProtKB:  Q96EK5
GTEx:  ENSG00000198954 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96EK5
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 4.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Medical Research Council (MRC, United Kingdom)United KingdomMR/R000352/1
Worldwide Cancer ResearchUnited Kingdom16-0037
Swiss National Science FoundationSwitzerland31003A_166608
Wellcome TrustUnited Kingdom202679/Z/16/Z
Wellcome TrustUnited Kingdom206166/Z/17/Z
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM130556

Revision History  (Full details and data files)

  • Version 1.0: 2020-12-30
    Type: Initial release
  • Version 1.1: 2024-05-01
    Changes: Data collection, Database references