4NCH

Crystal Structure of Pyrococcus furiosis Rad50 L802W mutation


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

ATP-driven Rad50 conformations regulate DNA tethering, end resection, and ATM checkpoint signaling.

Deshpande, R.A.Williams, G.J.Limbo, O.Williams, R.S.Kuhnlein, J.Lee, J.H.Classen, S.Guenther, G.Russell, P.Tainer, J.A.Paull, T.T.

(2014) Embo J. 33: 482-500

  • DOI: 10.1002/embj.201386100
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The Mre11-Rad50 complex is highly conserved, yet the mechanisms by which Rad50 ATP-driven states regulate the sensing, processing and signaling of DNA double-strand breaks are largely unknown. Here we design structure-based mutations in Pyrococcus fu ...

    The Mre11-Rad50 complex is highly conserved, yet the mechanisms by which Rad50 ATP-driven states regulate the sensing, processing and signaling of DNA double-strand breaks are largely unknown. Here we design structure-based mutations in Pyrococcus furiosus Rad50 to alter protein core plasticity and residues undergoing ATP-driven movements within the catalytic domains. With this strategy we identify Rad50 separation-of-function mutants that either promote or destabilize the ATP-bound state. Crystal structures, X-ray scattering, biochemical assays, and functional analyses of mutant PfRad50 complexes show that the ATP-induced 'closed' conformation promotes DNA end binding and end tethering, while hydrolysis-induced opening is essential for DNA resection. Reducing the stability of the ATP-bound state impairs DNA repair and Tel1 (ATM) checkpoint signaling in Schizosaccharomyces pombe, double-strand break resection in Saccharomyces cerevisiae, and ATM activation by human Mre11-Rad50-Nbs1 in vitro, supporting the generality of the P. furiosus Rad50 structure-based mutational analyses. These collective results suggest that ATP-dependent Rad50 conformations switch the Mre11-Rad50 complex between DNA tethering, ATM signaling, and 5' strand resection, revealing molecular mechanisms regulating responses to DNA double-strand breaks.


    Organizational Affiliation

    The Department of Molecular Genetics and Microbiology, The Howard Hughes Medical Institute Institute for Cellular and Molecular Biology The University of Texas at Austin, Austin, TX, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA double-strand break repair Rad50 ATPase
A, B
339Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)Mutation(s): 1 
Gene Names: rad50
Find proteins for P58301 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Go to UniProtKB:  P58301
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.207 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 70.443α = 90.00
b = 70.443β = 90.00
c = 281.948γ = 120.00
Software Package:
Software NamePurpose
Blu-Icedata collection
XSCALEdata scaling
PDB_EXTRACTdata extraction
PHENIXrefinement
XDSdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-03-05
    Type: Initial release
  • Version 1.1: 2014-04-02
    Type: Database references
  • Version 1.2: 2017-08-02
    Type: Refinement description, Source and taxonomy