4ANJ

MYOSIN VI (MDinsert2-GFP fusion) PRE-POWERSTROKE STATE (MG.ADP.AlF4)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.241 

Starting Models: experimental
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Ligand Structure Quality Assessment 


This is version 1.6 of the entry. See complete history


Literature

Processive Steps in the Reverse Direction Require Uncoupling of the Lead Head Lever Arm of Myosin Vi.

Menetrey, J.Isabet, T.Ropars, V.Mukherjea, M.Pylypenko, O.Liu, X.Perez, J.Vachette, P.Sweeney, H.L.Houdusse, A.M.

(2012) Mol Cell 48: 75

  • DOI: https://doi.org/10.1016/j.molcel.2012.07.034
  • Primary Citation of Related Structures:  
    4ANJ, 4E7S, 4E7Z

  • PubMed Abstract: 

    Myosin VI is the only known reverse-direction myosin motor. It has an unprecedented means of amplifying movements within the motor involving rearrangements of the converter subdomain at the C terminus of the motor and an unusual lever arm projecting from the converter. While the average step size of a myosin VI dimer is 30-36 nm, the step size is highly variable, presenting a challenge to the lever arm mechanism by which all myosins are thought to move. Herein, we present structures of myosin VI that reveal regions of compliance that allow an uncoupling of the lead head when movement is modeled on actin. The location of the compliance restricts the possible actin binding sites and predicts the observed stepping behavior. The model reveals that myosin VI, unlike plus-end directed myosins, does not use a pure lever arm mechanism, but instead steps with a mechanism analogous to the kinesin neck-linker uncoupling model.


  • Organizational Affiliation

    Structural Motility, Institut Curie, Centre de Recherche, Paris, France.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
UNCONVENTIONAL MYOSIN-VI, GREEN FLUORESCENT PROTEIN1,052Sus scrofaAequorea victoria
This entity is chimeric
Mutation(s): 1 
UniProt
Find proteins for P42212 (Aequorea victoria)
Explore P42212 
Go to UniProtKB:  P42212
Find proteins for Q29122 (Sus scrofa)
Explore Q29122 
Go to UniProtKB:  Q29122
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsQ29122P42212
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
CALMODULIN149Drosophila melanogasterMutation(s): 0 
UniProt
Find proteins for P62152 (Drosophila melanogaster)
Explore P62152 
Go to UniProtKB:  P62152
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP62152
Sequence Annotations
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
CR2
Query on CR2
A
L-PEPTIDE LINKINGC13 H13 N3 O4GLY, TYR, GLY
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.241 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 193.093α = 90
b = 62.657β = 117.96
c = 156.04γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-10-17
    Type: Initial release
  • Version 1.1: 2012-11-07
    Changes: Database references
  • Version 1.2: 2012-11-28
    Changes: Database references, Other
  • Version 1.3: 2018-06-20
    Changes: Advisory, Data collection, Derived calculations
  • Version 1.4: 2019-10-23
    Changes: Data collection, Database references, Other
  • Version 1.5: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Refinement description
  • Version 1.6: 2024-09-11
    Changes: Derived calculations