Archaeal DNA helicase Hjm apo state in form 1

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.228 

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Atomic structures and functional implications of the archaeal RecQ-like helicase Hjm

Oyama, T.Oka, H.Mayanagi, K.Shirai, T.Matoba, K.Fujikane, R.Ishino, Y.Morikawa, K.

(2009) BMC Struct Biol 9: 2-2

  • DOI: https://doi.org/10.1186/1472-6807-9-2
  • Primary Citation of Related Structures:  
    2ZJ2, 2ZJ5, 2ZJ8, 2ZJA

  • PubMed Abstract: 

    Pyrococcus furiosus Hjm (PfuHjm) is a structure-specific DNA helicase that was originally identified by in vitro screening for Holliday junction migration activity. It belongs to helicase superfamily 2, and shares homology with the human DNA polymerase Theta (PolTheta), HEL308, and Drosophila Mus308 proteins, which are involved in DNA repair. Previous biochemical and genetic analyses revealed that PfuHjm preferentially binds to fork-related Y-structured DNAs and unwinds their double-stranded regions, suggesting that this helicase is a functional counterpart of the bacterial RecQ helicase, which is essential for genome maintenance. Elucidation of the DNA unwinding and translocation mechanisms by PfuHjm will require its three-dimensional structure at atomic resolution.

  • Organizational Affiliation

    The Takara Bio Endowed Division, Institute for Protein Research, Osaka University, Open Laboratories of Advanced Bioscience and Biotechnology (OLABB), 6-2-3 Furuedai, Suita, Osaka 565-0874, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Putative ski2-type helicase720Pyrococcus furiosusMutation(s): 0 
EC: 3.6.1
Find proteins for O73946 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Explore O73946 
Go to UniProtKB:  O73946
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO73946
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.228 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 117.269α = 90
b = 83.441β = 120.69
c = 95.019γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-02-10
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2024-03-13
    Changes: Data collection, Database references, Derived calculations