Crystal structure of the HerA hexameric DNA translocase from Sulfolobus solfataricus bound to AMP-PNP

Experimental Data Snapshot

  • Resolution: 2.84 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 

wwPDB Validation   3D Report Full Report

Ligand Structure Quality Assessment 

This is version 1.0 of the entry. See complete history


Structure of the Hexameric Hera ATPase Reveals a Mechanism of Translocation-Coupled DNA-End Processing in Archaea

Rzechorzek, N.J.Blackwood, J.K.Bray, S.M.Maman, J.D.Pellegrini, L.Robinson, N.P.

(2014) Nat Commun 5: 5506

  • DOI: https://doi.org/10.1038/ncomms6506
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The HerA ATPase cooperates with the NurA nuclease and the Mre11-Rad50 complex for the repair of double-strand DNA breaks in thermophilic archaea. Here we extend our structural knowledge of this minimal end-resection apparatus by presenting the first crystal structure of hexameric HerA. The full-length structure visualizes at atomic resolution the N-terminal HerA-ATP synthase domain and a conserved C-terminal extension, which acts as a physical brace between adjacent protomers. The brace also interacts in trans with nucleotide-binding residues of the neighbouring subunit. Our observations support a model in which the coaxial interaction of the HerA ring with the toroidal NurA dimer generates a continuous channel traversing the complex. HerA-driven translocation would propel the DNA towards the narrow annulus of NurA, leading to duplex melting and nucleolytic digestion. This system differs substantially from the bacterial end-resection paradigms. Our findings suggest a novel mode of DNA-end processing by this integrated archaeal helicase-nuclease machine.

  • Organizational Affiliation

    Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 1GA, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
500Saccharolobus solfataricus P2Mutation(s): 10 
Find proteins for Q97WG8 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Explore Q97WG8 
Go to UniProtKB:  Q97WG8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ97WG8
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.84 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 150.21α = 90
b = 150.21β = 90
c = 140.54γ = 120
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-03
    Type: Initial release