5EJS

Structure of Dictyostelium Discoideum Myosin VII MyTH4-FERM MF2 domain, mutant 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Myosin MyTH4-FERM structures highlight important principles of convergent evolution.

Planelles-Herrero, V.J.Blanc, F.Sirigu, S.Sirkia, H.Clause, J.Sourigues, Y.Johnsrud, D.O.Amigues, B.Cecchini, M.Gilbert, S.P.Houdusse, A.Titus, M.A.

(2016) Proc.Natl.Acad.Sci.USA 113: E2906-E2915

  • DOI: 10.1073/pnas.1600736113
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Myosins containing MyTH4-FERM (myosin tail homology 4-band 4.1, ezrin, radixin, moesin, or MF) domains in their tails are found in a wide range of phylogenetically divergent organisms, such as humans and the social amoeba Dictyostelium (Dd). Interest ...

    Myosins containing MyTH4-FERM (myosin tail homology 4-band 4.1, ezrin, radixin, moesin, or MF) domains in their tails are found in a wide range of phylogenetically divergent organisms, such as humans and the social amoeba Dictyostelium (Dd). Interestingly, evolutionarily distant MF myosins have similar roles in the extension of actin-filled membrane protrusions such as filopodia and bind to microtubules (MT), suggesting that the core functions of these MF myosins have been highly conserved over evolution. The structures of two DdMyo7 signature MF domains have been determined and comparison with mammalian MF structures reveals that characteristic features of MF domains are conserved. However, across millions of years of evolution conserved class-specific insertions are seen to alter the surfaces and the orientation of subdomains with respect to each other, likely resulting in new sites for binding partners. The MyTH4 domains of Myo10 and DdMyo7 bind to MT with micromolar affinity but, surprisingly, their MT binding sites are on opposite surfaces of the MyTH4 domain. The structural analysis in combination with comparison of diverse MF myosin sequences provides evidence that myosin tail domain features can be maintained without strict conservation of motifs. The results illustrate how tuning of existing features can give rise to new structures while preserving the general properties necessary for myosin tails. Thus, tinkering with the MF domain enables it to serve as a multifunctional platform for cooperative recruitment of various partners, allowing common properties such as autoinhibition of the motor and microtubule binding to arise through convergent evolution.


    Organizational Affiliation

    Structural Motility, Institut Curie, CNRS, UMR 144, PSL Research University, F-75005 Paris, France; UPMC Université de Paris 6, Institut de Formation Doctorale, Sorbonne Universités, 75252 Paris Cedex 05, France;




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Myosin-I heavy chain
A, B
496Dictyostelium discoideumMutation(s): 3 
Gene Names: myoI
Find proteins for Q9U1M8 (Dictyostelium discoideum)
Go to UniProtKB:  Q9U1M8
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.205 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 40.170α = 90.00
b = 158.840β = 90.00
c = 194.660γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling
PDB_EXTRACTdata extraction
BUSTER-TNTrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-07-06
    Type: Initial release