5ET1

Crystal structure of Myo3b-ARB1 in complex with Espin1-AR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.169 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Myosin III-mediated cross-linking and stimulation of actin bundling activity of Espin

Liu, H.Li, J.Raval, M.H.Yao, N.Deng, X.Lu, Q.Nie, S.Feng, W.Wan, J.Yengo, C.M.Liu, W.Zhang, M.

(2016) Elife 5: --

  • DOI: 10.7554/eLife.12856
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Class III myosins (Myo3) and actin-bundling protein Espin play critical roles in regulating the development and maintenance of stereocilia in vertebrate hair cells, and their defects cause hereditary hearing impairments. Myo3 interacts with Espin1 th ...

    Class III myosins (Myo3) and actin-bundling protein Espin play critical roles in regulating the development and maintenance of stereocilia in vertebrate hair cells, and their defects cause hereditary hearing impairments. Myo3 interacts with Espin1 through its tail homology I motif (THDI), however it is not clear how Myo3 specifically acts through Espin1 to regulate the actin bundle assembly and stabilization. Here we discover that Myo3 THDI contains a pair of repeat sequences capable of independently and strongly binding to the ankyrin repeats of Espin1, revealing an unexpected Myo3-mediated cross-linking mechanism of Espin1. The structures of Myo3 in complex with Espin1 not only elucidate the mechanism of the binding, but also reveal a Myo3-induced release of Espin1 auto-inhibition mechanism. We also provide evidence that Myo3-mediated cross-linking can further promote actin fiber bundling activity of Espin1.


    Organizational Affiliation

    Shenzhen Key Laboratory for Neuronal Structural Biology, Biomedical Research Institute, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Espin
A, B
353Mus musculusMutation(s): 0 
Gene Names: Espn
Find proteins for Q9ET47 (Mus musculus)
Go to UniProtKB:  Q9ET47
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Myosin-IIIb
C, D
36Mus musculusMutation(s): 0 
Gene Names: Myo3b
EC: 2.7.11.1
Find proteins for Q1EG27 (Mus musculus)
Go to UniProtKB:  Q1EG27
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B, C
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.169 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 72.740α = 90.00
b = 71.142β = 96.88
c = 76.883γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Research Grant CouncilHong Kong--

Revision History 

  • Version 1.0: 2016-02-03
    Type: Initial release