5FJY

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.233 

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.USA 113: 2418

  • DOI: 10.1073/pnas.1520817113

  • 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 ...

    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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
KINESIN LIGHT CHAIN 2
A, B, C
324Mus musculusMutation(s): 0 
Gene Names: Klc2
Find proteins for O88448 (Mus musculus)
Go to UniProtKB:  O88448
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
UNKNOWN PEPTIDE
D, E, F
5N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
UNK
Query on UNK
D, E, F
L-PEPTIDE LINKINGC4 H9 N O2

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.233 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 148.700α = 90.00
b = 86.280β = 98.41
c = 111.740γ = 90.00
Software Package:
Software NamePurpose
Aimlessdata scaling
BUSTERrefinement
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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