6BNW

CryoEM structure of Myosin VI-Actin complex in the ADP state, backbone-averaged with side chains truncated to alanine


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.5 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Cryo-EM structures reveal specialization at the myosin VI-actin interface and a mechanism of force sensitivity.

Gurel, P.S.Kim, L.Y.Ruijgrok, P.V.Omabegho, T.Bryant, Z.Alushin, G.M.

(2017) Elife 6: --

  • DOI: 10.7554/eLife.31125
  • Primary Citation of Related Structures:  6BNO, 6BNP, 6BNQ, 6BNU, 6BNV

  • PubMed Abstract: 
  • Despite extensive scrutiny of the myosin superfamily, the lack of high-resolution structures of actin-bound states has prevented a complete description of its mechanochemical cycle and limited insight into how sequence and structural diversification ...

    Despite extensive scrutiny of the myosin superfamily, the lack of high-resolution structures of actin-bound states has prevented a complete description of its mechanochemical cycle and limited insight into how sequence and structural diversification of the motor domain gives rise to specialized functional properties. Here we present cryo-EM structures of the unique minus-end directed myosin VI motor domain in rigor (4.6 Å) and Mg-ADP (5.5 Å) states bound to F-actin. Comparison to the myosin IIC-F-actin rigor complex reveals an almost complete lack of conservation of residues at the actin-myosin interface despite preservation of the primary sequence regions composing it, suggesting an evolutionary path for motor specialization. Additionally, analysis of the transition from ADP to rigor provides a structural rationale for force sensitivity in this step of the mechanochemical cycle. Finally, we observe reciprocal rearrangements in actin and myosin accompanying the transition between these states, supporting a role for actin structural plasticity during force generation by myosin VI.


    Related Citations: 
    • Controllable molecular motors engineered from myosin and RNA.
      Omabegho, T.,Gurel, P.S.,Cheng, C.Y.,Kim, L.Y.,Ruijgrok, P.V.,Das, R.,Alushin, G.M.,Bryant, Z.
      (2017) Nat Nanotechnol --: --


    Organizational Affiliation

    Laboratory of Structural Biophysics and Mechanobiology, The Rockefeller University, New York, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Unconventional myosin-VI
I, J, K, L, M, N
816Sus scrofaGene Names: MYO6
Find proteins for F1RQI7 (Sus scrofa)
Go to Gene View: MYO6
Go to UniProtKB:  F1RQI7
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Actin, alpha skeletal muscle
A, B, C, D, E, F, G, H
373Oryctolagus cuniculusGene Names: ACTA1 (ACTA)
Find proteins for P68135 (Oryctolagus cuniculus)
Go to Gene View: ACTA1
Go to UniProtKB:  P68135
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.5 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
National Institutes of Health/Office of the DirectorUnited States5DP5OD017885

Revision History 

  • Version 1.0: 2018-01-10
    Type: Initial release
  • Version 1.1: 2018-01-17
    Type: Author supporting evidence