6BNP

CryoEM structure of MyosinVI-actin complex in the rigor (nucleotide-free) state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.60 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.2 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: https://doi.org/10.7554/eLife.31125
  • Primary Citation of Related Structures:  
    6BNO, 6BNP, 6BNQ, 6BNU, 6BNV, 6BNW

  • 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 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.


  • Organizational Affiliation

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


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Unconventional myosin-VI704Sus scrofaMutation(s): 0 
Gene Names: MYO6
UniProt
Find proteins for Q29122 (Sus scrofa)
Explore Q29122 
Go to UniProtKB:  Q29122
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ29122
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Actin, alpha skeletal muscle373Oryctolagus cuniculusMutation(s): 0 
UniProt
Find proteins for P68135 (Oryctolagus cuniculus)
Explore P68135 
Go to UniProtKB:  P68135
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP68135
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download Ideal Coordinates CCD File 
BA [auth G]
DA [auth H]
P [auth A]
R [auth B]
T [auth C]
BA [auth G],
DA [auth H],
P [auth A],
R [auth B],
T [auth C],
V [auth D],
X [auth E],
Z [auth F]
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
AA [auth G]
CA [auth H]
O [auth A]
Q [auth B]
S [auth C]
AA [auth G],
CA [auth H],
O [auth A],
Q [auth B],
S [auth C],
U [auth D],
W [auth E],
Y [auth F]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.60 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTMDFF
RECONSTRUCTIONFREALIGN9.11

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


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

Revision History  (Full details and data files)

  • Version 1.0: 2018-01-10
    Type: Initial release
  • Version 1.1: 2018-01-17
    Changes: Author supporting evidence
  • Version 1.2: 2024-03-13
    Changes: Data collection, Database references, Derived calculations