5FJY

Crystal structure of mouse kinesin light chain 2 (residues 161-480)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.00 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.234 

wwPDB Validation   3D Report Full Report


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


Literature

The Light Chains of Kinesin-1 are Autoinhibited.

Yip, Y.Y., Pernigo, S., Sanger, A., Xu, M., Parsons, M., Steiner, R.A., Dodding, M.P.

(2016) Proc Natl Acad Sci U S A 113: 2418

  • DOI: 10.1073/pnas.1520817113
  • Primary Citation of Related Structures:  
    5FJY

  • PubMed Abstract: 

    • The light chains (KLCs) of the microtubule motor kinesin-1 bind cargoes and regulate its activity. Through their tetratricopeptide repeat domain (KLC(TPR)), they can recognize short linear peptide motifs found in many cargo proteins characterized by a central tryptophan flanked by aspartic/glutamic acid residues (W-acidic) ...

    The light chains (KLCs) of the microtubule motor kinesin-1 bind cargoes and regulate its activity. Through their tetratricopeptide repeat domain (KLC(TPR)), they can recognize short linear peptide motifs found in many cargo proteins characterized by a central tryptophan flanked by aspartic/glutamic acid residues (W-acidic). Using a fluorescence resonance energy transfer biosensor in combination with X-ray crystallographic, biochemical, and biophysical approaches, we describe how an intramolecular interaction between the KLC2(TPR) domain and a conserved peptide motif within an unstructured region of the molecule, partly occludes the W-acidic binding site on the TPR domain. Cargo binding displaces this interaction, effecting a global conformational change in KLCs resulting in a more extended conformation. Thus, like the motor-bearing kinesin heavy chains, KLCs exist in a dynamic conformational state that is regulated by self-interaction and cargo binding. We propose a model by which, via this molecular switch, W-acidic cargo binding regulates the activity of the holoenzyme.

    Related Citations: 
    • Structural Basis for Kinesin-1:Cargo Recognition
      Pernigo, S., Lamprecht, A., Steiner, R.A., Dodding, M.P.
      (2013) Science 340: 356
    Organizational Affiliation: 

    Randall Division of Cell and Molecular Biophysics, King's College London, London SE1 1UL, United Kingdom mark.dodding@kcl.ac.uk roberto.steiner@kcl.ac.uk.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
KINESIN LIGHT CHAIN 2A, B, C324Mus musculusMutation(s): 0 
Gene Names: Klc2
UniProt & NIH Common Fund Data Resources
Find proteins for O88448 (Mus musculus)
Explore O88448 
Go to UniProtKB:  O88448
IMPC:  MGI:107953
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO88448
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
UNKNOWN PEPTIDED, E, F5Mus musculusMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.00 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.234 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 148.7α = 90
b = 86.28β = 98.41
c = 111.74γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-02-24
    Type: Initial release
  • Version 1.1: 2016-03-02
    Changes: Database references
  • Version 1.2: 2016-03-16
    Changes: Database references