Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 82.75 kDa 
• Atom Count: 5,902 
• Modelled Residue Count: 700 
• Deposited Residue Count: 720 
• Unique protein chains: 1

 2ZJ8

Archaeal DNA helicase Hjm apo state in form 2

• PDB DOI:  https://doi.org/10.2210/pdb2ZJ8/pdb

• Classification: HYDROLASE
• Organism(s): Pyrococcus furiosus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2008-02-29 Released: 2009-02-10 
• Deposition Author(s): Oyama, T., Oka, H., Fujikane, R., Ishino, Y., Morikawa, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.258 
• R-Value Work: 0.223 
• R-Value Observed: 0.223 

Literature

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

• PubMed: 19159486 
• 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.

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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.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative ski2-type helicase	A	720	Pyrococcus furiosus	Mutation(s): 0  EC: 3.6.1 (PDB Primary Data), 3.6.4.12 (UniProt)
UniProt
Find proteins for O73946 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)) Explore O73946  Go to UniProtKB:  O73946

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.258 
• R-Value Work: 0.223 
• R-Value Observed: 0.223 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 122.346	α = 90
b = 81.155	β = 111.92
c = 85.192	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-02-10 
Deposition Author(s): Oyama, T., Oka, H., Fujikane, R., Ishino, Y., Morikawa, K.

Revision History  

• Version 1.0: 2009-02-10
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance