5OF9

Crystal structure of human MORC2 (residues 1-603)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.807 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.161 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Neuropathic MORC2 mutations perturb GHKL ATPase dimerization dynamics and epigenetic silencing by multiple structural mechanisms.

Douse, C.H.Bloor, S.Liu, Y.Shamin, M.Tchasovnikarova, I.A.Timms, R.T.Lehner, P.J.Modis, Y.

(2018) Nat Commun 9: 651-651

  • DOI: 10.1038/s41467-018-03045-x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Missense mutations in MORC2 cause neuropathies including spinal muscular atrophy and Charcot-Marie-Tooth disease. We recently identified MORC2 as an effector of epigenetic silencing by the human silencing hub (HUSH). Here we report the biochemical an ...

    Missense mutations in MORC2 cause neuropathies including spinal muscular atrophy and Charcot-Marie-Tooth disease. We recently identified MORC2 as an effector of epigenetic silencing by the human silencing hub (HUSH). Here we report the biochemical and cellular activities of MORC2 variants, alongside crystal structures of wild-type and neuropathic forms of a human MORC2 fragment comprising the GHKL-type ATPase module and CW-type zinc finger. This fragment dimerizes upon binding ATP and contains a hinged, functionally critical coiled-coil insertion absent in other GHKL ATPases. We find that dimerization and DNA binding of the MORC2 ATPase module transduce HUSH-dependent silencing. Disease mutations change the dynamics of dimerization by distinct structural mechanisms: destabilizing the ATPase-CW module, trapping the ATP lid, or perturbing the dimer interface. These defects lead to the modulation of HUSH function, thus providing a molecular basis for understanding MORC2-associated neuropathies.


    Related Citations: 
    • Hyperactivation of HUSH complex function by Charcot-Marie-Tooth disease mutation in MORC2.
      Tchasovnikarova, I.A.,Timms, R.T.,Douse, C.H.,Roberts, R.C.,Dougan, G.,Kingston, R.E.,Modis, Y.,Lehner, P.J.
      (2017) Nat. Genet. 49: 1035


    Organizational Affiliation

    Department of Medicine, MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, University of Cambridge, Cambridge, CB2 0QH, UK. cdouse@mrc-lmb.cam.ac.uk.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MORC family CW-type zinc finger protein 2
A, B
606Homo sapiensGene Names: MORC2 (KIAA0852, ZCWCC1)
Find proteins for Q9Y6X9 (Homo sapiens)
Go to Gene View: MORC2
Go to UniProtKB:  Q9Y6X9
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
ANP
Query on ANP

Download SDF File 
Download CCD File 
A, B
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 66.170α = 90.00
b = 127.930β = 101.22
c = 80.190γ = 90.00
Software Package:
Software NamePurpose
Aimlessdata scaling
PHENIXrefinement
PHASERphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
Wellcome TrustUnited Kingdom101908/Z/13/Z
Biotechnology and Biological Sciences Research CouncilUnited KingdomBB/N011791/1

Revision History 

  • Version 1.0: 2018-02-14
    Type: Initial release
  • Version 1.1: 2018-02-28
    Type: Database references