5MV7

Structure of human Myosin 7b C-terminal MyTH4-FERM MF2 domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.44 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Myosin 7 and its adaptors link cadherins to actin.

Yu, I.M.Planelles-Herrero, V.J.Sourigues, Y.Moussaoui, D.Sirkia, H.Kikuti, C.Stroebel, D.Titus, M.A.Houdusse, A.

(2017) Nat Commun 8: 15864-15864

  • DOI: 10.1038/ncomms15864
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cadherin linkages between adjacent stereocilia and microvilli are essential for mechanotransduction and maintaining their organization. They are anchored to actin through interaction of their cytoplasmic domains with related tripartite complexes cons ...

    Cadherin linkages between adjacent stereocilia and microvilli are essential for mechanotransduction and maintaining their organization. They are anchored to actin through interaction of their cytoplasmic domains with related tripartite complexes consisting of a class VII myosin and adaptor proteins: Myo7a/SANS/Harmonin in stereocilia and Myo7b/ANKS4B/Harmonin in microvilli. Here, we determine high-resolution structures of Myo7a and Myo7b C-terminal MyTH4-FERM domain (MF2) and unveil how they recognize harmonin using a novel binding mode. Systematic definition of interactions between domains of the tripartite complex elucidates how the complex assembles and prevents possible self-association of harmonin-a. Several Myo7a deafness mutants that map to the surface of MF2 disrupt harmonin binding, revealing the molecular basis for how they impact the formation of the tripartite complex and disrupt mechanotransduction. Our results also suggest how switching between different harmonin isoforms can regulate the formation of networks with Myo7a motors and coordinate force sensing in stereocilia.


    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-VIIb
A
522Homo sapiensMutation(s): 0 
Gene Names: MYO7B
Find proteins for Q6PIF6 (Homo sapiens)
Go to Gene View: MYO7B
Go to UniProtKB:  Q6PIF6
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
TAM
Query on TAM

Download SDF File 
Download CCD File 
A
TRIS(HYDROXYETHYL)AMINOMETHANE
C7 H17 N O3
GKODZWOPPOTFGA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.44 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.209 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 123.670α = 90.00
b = 42.810β = 97.69
c = 118.370γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling
MOLREPphasing
BUSTERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
NSFUnited StatesMCB-1244235
French National Research AgencyFranceANR-13-BSV8-0019-01
FRMFranceING20140129255
Labex CelTisPhyBioFrance11-LBX-0038
IDEX PSLFranceANR-10-IDEX-0001-02-PSL

Revision History 

  • Version 1.0: 2017-07-05
    Type: Initial release
  • Version 1.1: 2017-07-12
    Type: Database references
  • Version 1.2: 2017-09-06
    Type: Author supporting evidence