5KG8

Rigor myosin X co-complexed with an actin filament


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 9.10 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

The myosin X motor is optimized for movement on actin bundles.

Ropars, V.Yang, Z.Isabet, T.Blanc, F.Zhou, K.Lin, T.Liu, X.Hissier, P.Samazan, F.Amigues, B.Yang, E.D.Park, H.Pylypenko, O.Cecchini, M.Sindelar, C.V.Sweeney, H.L.Houdusse, A.

(2016) Nat Commun 7: 12456-12456

  • DOI: https://doi.org/10.1038/ncomms12456
  • Primary Citation of Related Structures:  
    5HMO, 5HMP, 5I0H, 5I0I, 5KG8

  • PubMed Abstract: 

    Myosin X has features not found in other myosins. Its structure must underlie its unique ability to generate filopodia, which are essential for neuritogenesis, wound healing, cancer metastasis and some pathogenic infections. By determining high-resolution structures of key components of this motor, and characterizing the in vitro behaviour of the native dimer, we identify the features that explain the myosin X dimer behaviour. Single-molecule studies demonstrate that a native myosin X dimer moves on actin bundles with higher velocities and takes larger steps than on single actin filaments. The largest steps on actin bundles are larger than previously reported for artificially dimerized myosin X constructs or any other myosin. Our model and kinetic data explain why these large steps and high velocities can only occur on bundled filaments. Thus, myosin X functions as an antiparallel dimer in cells with a unique geometry optimized for movement on actin bundles.


  • Organizational Affiliation

    Structural Motility, Institut Curie, PSL Research University, CNRS, UMR 144, F-75005 Paris, France.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Unconventional myosin-X739Homo sapiensMutation(s): 0 
Gene Names: MYO10KIAA0799
UniProt & NIH Common Fund Data Resources
Find proteins for Q9HD67 (Homo sapiens)
Explore Q9HD67 
Go to UniProtKB:  Q9HD67
PHAROS:  Q9HD67
GTEx:  ENSG00000145555 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HD67
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 muscle
B, C, D
375Oryctolagus 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
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 9.10 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONFREALIGN8.06

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01 GM 110530-01

Revision History  (Full details and data files)

  • Version 1.0: 2016-09-07
    Type: Initial release
  • Version 1.1: 2016-09-14
    Changes: Database references
  • Version 1.2: 2017-09-13
    Changes: Author supporting evidence, Data collection
  • Version 1.3: 2019-12-25
    Changes: Author supporting evidence
  • Version 1.4: 2024-03-06
    Changes: Data collection, Database references