5XBF

Crystal Structure of Myo7b C-terminal MyTH4-FERM in complex with USH1C PDZ3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.188 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of Myo7b/USH1C complex suggests a general PDZ domain binding mode by MyTH4-FERM myosins.

Li, J.He, Y.Weck, M.L.Lu, Q.Tyska, M.J.Zhang, M.

(2017) Proc Natl Acad Sci U S A 114: E3776-E3785

  • DOI: 10.1073/pnas.1702251114
  • Primary Citation of Related Structures:  
    5XBF

  • PubMed Abstract: 
  • Unconventional myosin 7a (Myo7a), myosin 7b (Myo7b), and myosin 15a (Myo15a) all contain MyTH4-FERM domains (myosin tail homology 4-band 4.1, ezrin, radixin, moesin; MF) in their cargo binding tails and are essential for the growth and function of microvilli and stereocilia ...

    Unconventional myosin 7a (Myo7a), myosin 7b (Myo7b), and myosin 15a (Myo15a) all contain MyTH4-FERM domains (myosin tail homology 4-band 4.1, ezrin, radixin, moesin; MF) in their cargo binding tails and are essential for the growth and function of microvilli and stereocilia. Numerous mutations have been identified in the MyTH4-FERM tandems of these myosins in patients suffering visual and hearing impairment. Although a number of MF domain binding partners have been identified, the molecular basis of interactions with the C-terminal MF domain (CMF) of these myosins remains poorly understood. Here we report the high-resolution crystal structure of Myo7b CMF in complex with the extended PDZ3 domain of USH1C (a.k.a., Harmonin), revealing a previously uncharacterized interaction mode both for MyTH4-FERM tandems and for PDZ domains. We predicted, based on the structure of the Myo7b CMF/USH1C PDZ3 complex, and verified that Myo7a CMF also binds to USH1C PDZ3 using a similar mode. The structure of the Myo7b CMF/USH1C PDZ complex provides mechanistic explanations for >20 deafness-causing mutations in Myo7a CMF. Taken together, these findings suggest that binding to PDZ domains, such as those from USH1C, PDZD7, and Whirlin, is a common property of CMFs of Myo7a, Myo7b, and Myo15a.


    Organizational Affiliation

    Center of Systems Biology and Human Health, School of Science and Institute for Advanced Study, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Unconventional myosin-VIIbA516Homo sapiensMutation(s): 0 
Gene Names: MYO7B
UniProt & NIH Common Fund Data Resources
Find proteins for Q6PIF6 (Homo sapiens)
Explore Q6PIF6 
Go to UniProtKB:  Q6PIF6
PHAROS:  Q6PIF6
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HarmoninB125Homo sapiensMutation(s): 0 
Gene Names: USH1CAIE75
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y6N9 (Homo sapiens)
Explore Q9Y6N9 
Go to UniProtKB:  Q9Y6N9
PHAROS:  Q9Y6N9
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MLT
Query on MLT

Download Ideal Coordinates CCD File 
E [auth A]D-MALATE
C4 H6 O5
BJEPYKJPYRNKOW-UWTATZPHSA-N
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
C [auth A], D [auth A], G [auth B]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

Download Ideal Coordinates CCD File 
F [auth A]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.188 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.634α = 90
b = 42.537β = 97.51
c = 118.39γ = 90
Software Package:
Software NamePurpose
DENZOdata collection
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
DENZOdata reduction
AutoSolphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-05-17
    Type: Initial release
  • Version 1.1: 2017-12-06
    Changes: Database references