1WP9

Crystal structure of Pyrococcus furiosus Hef helicase domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.257 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure and Functional Implications of Pyrococcus furiosus Hef Helicase Domain Involved in Branched DNA Processing

Nishino, T.Komori, K.Tsuchiya, D.Ishino, Y.Morikawa, K.

(2005) Structure 13: 143-153

  • DOI: 10.1016/j.str.2004.11.008

  • PubMed Abstract: 
  • DNA and RNA frequently form various branched intermediates that are important for the transmission of genetic information. Helicases play pivotal roles in the processing of these transient intermediates during nucleic acid metabolism. The archaeal He ...

    DNA and RNA frequently form various branched intermediates that are important for the transmission of genetic information. Helicases play pivotal roles in the processing of these transient intermediates during nucleic acid metabolism. The archaeal Hef helicase/ nuclease is a representative protein that processes flap- or fork-DNA structures, and, intriguingly, its C-terminal half belongs to the XPF/Mus81 nuclease family. Here, we report the crystal structure of the helicase domain of the Hef protein from Pyrococcus furiosus. The structure reveals a novel helical insertion between the two conserved helicase core domains. This positively charged extra region, structurally similar to the "thumb" domain of DNA polymerase, plays critical roles in fork recognition. The Hef helicase/nuclease exhibits sequence similarity to the Mph1 helicase from Saccharomyces cerevisiae; XPF/Rad1, involved in DNA repair; and a putative Hef homolog identified in mammals. Hence, our findings provide a structural basis for the functional mechanisms of this helicase/nuclease family.


    Organizational Affiliation

    Department of Structural Biology, Biomolecular Engineering Research Institute, 6-2-3 Furuedai, Suita, Osaka 565-0874, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP-dependent RNA helicase, putative
A, B, C, D, E, F
494Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)N/A
Find proteins for Q8TZH8 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Go to UniProtKB:  Q8TZH8
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A, B, C, D, E, F
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.257 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 118.498α = 90.00
b = 165.940β = 114.85
c = 119.157γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
SHARPphasing
SCALEPACKdata scaling
CNSrefinement
SOLVEphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-02-01
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Source and taxonomy, Version format compliance