2Q24

Crystal structure of TetR transcriptional regulator SCO0520 from Streptomyces coelicolor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of a putative transcriptional regulator SCO0520 from Streptomyces coelicolor A3(2) reveals an unusual dimer among TetR family proteins.

Filippova, E.V.Chruszcz, M.Cymborowski, M.Gu, J.Savchenko, A.Edwards, A.Minor, W.

(2011) J.Struct.Funct.Genom. 12: 149-157

  • DOI: 10.1007/s10969-011-9112-4

  • PubMed Abstract: 
  • A structure of the apo-form of the putative transcriptional regulator SCO0520 from Streptomyces coelicolor A3(2) was determined at 1.8 Å resolution. SCO0520 belongs to the TetR family of regulators. In the crystal lattice, the asymmetric unit contain ...

    A structure of the apo-form of the putative transcriptional regulator SCO0520 from Streptomyces coelicolor A3(2) was determined at 1.8 Å resolution. SCO0520 belongs to the TetR family of regulators. In the crystal lattice, the asymmetric unit contains two monomers that form an Ω-shaped dimer. The distance between the two DNA-recognition domains is much longer than the corresponding distances in the known structures of other TetR family proteins. In addition, the subunits in the dimer have different conformational states, resulting in different relative positions of the DNA-binding and regulatory domains. Similar conformational modifications are observed in other TetR regulators and result from ligand binding. These studies provide information about the flexibility of SCO0520 molecule and its putative biological function.


    Organizational Affiliation

    Department of Molecular Physiology and Biological Physics, University of Virginia, 1340 Jefferson Park Avenue, Jordan Hall, Room 4223, Charlottesville, VA 22908, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Putative tetR family transcriptional regulator
A, B
194Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145)Mutation(s): 0 
Find proteins for Q9RJL5 (Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145))
Go to UniProtKB:  Q9RJL5
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACT
Query on ACT

Download SDF File 
Download CCD File 
A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.191 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 52.295α = 90.00
b = 146.152β = 90.00
c = 47.305γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
HKL-3000data reduction
RESOLVEmodel building
ARP/wARPmodel building
Cootmodel building
HKL-2000data reduction
DMmodel building
MLPHAREphasing
RESOLVEphasing
DMphasing
HKL-3000data collection
HKL-3000data scaling
SHELXDphasing
CCP4phasing
HKL-3000phasing
SHELXEmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-07-03
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.3: 2011-11-02
    Type: Database references