2P4W

Crystal structure of heat shock regulator from Pyrococcus furiosus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.252 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the Archaeal Heat Shock Regulator from Pyrococcus furiosus: A Molecular Chimera Representing Eukaryal and Bacterial Features.

Liu, W.Vierke, G.Wenke, A.K.Thomm, M.Ladenstein, R.

(2007) J.Mol.Biol. 369: 474-488

  • DOI: 10.1016/j.jmb.2007.03.044

  • PubMed Abstract: 
  • We report here the crystal structure of a protein from Pyrococcus furiosus (Phr) that represents the first characterized heat shock transcription factor in archaea. Phr specifically represses the expression of heat shock genes at physiological temper ...

    We report here the crystal structure of a protein from Pyrococcus furiosus (Phr) that represents the first characterized heat shock transcription factor in archaea. Phr specifically represses the expression of heat shock genes at physiological temperature in vitro and in vivo but is released from the promoters upon heat shock response. Structure analysis revealed a stable homodimer, each subunit consisting of an N-terminal winged helix DNA-binding domain (wH-DBD) and a C-terminal antiparallel coiled coil helical domain. The overall structure shows as a molecular chimera with significant folding similarity of its DBD to the bacterial SmtB/ArsR family, while its C-terminal part was found to be a remote homologue of the eukaryotic BAG domain. The dimeric protein recognizes a palindromic DNA sequence. Molecular docking and mutational analyses suggested a novel binding mode in which the major specific contacts occur at the minor groove interacting with the strongly basic wing containing a cluster of three arginine residues.


    Organizational Affiliation

    Karolinska Institutet NOVUM, Center for Structural Biochemistry, 141 57 Huddinge, Sweden. wei.liu@biosci.ki.se




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transcriptional regulatory protein arsR family
A, B
202Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)N/A
Find proteins for Q8U030 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Go to UniProtKB:  Q8U030
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.252 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 52.389α = 90.00
b = 82.854β = 90.00
c = 114.492γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
MxCuBEdata collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-03-27
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance