5KG8

Rigor myosin X co-complexed with an actin filament


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 9.1 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

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: 10.1038/ncomms12456
  • Primary Citation of Related Structures:  5HMO, 5HMP, 5I0H, 5I0I

  • 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-resol ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Unconventional myosin-X
A
739Homo sapiensGene Names: MYO10 (KIAA0799)
Find proteins for Q9HD67 (Homo sapiens)
Go to Gene View: MYO10
Go to UniProtKB:  Q9HD67
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Actin, alpha skeletal muscle
B, C, D
375Oryctolagus 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: 9.1 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/National Institute of General Medical SciencesUnited StatesR01 GM 110530-01

Revision History 

  • Version 1.0: 2016-09-07
    Type: Initial release
  • Version 1.1: 2016-09-14
    Type: Database references
  • Version 1.2: 2017-09-13
    Type: Author supporting evidence, Data collection