3S8Q

Crystal structure of the R-M controller protein C.Esp1396I OL operator complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.157 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Recognition of dual symmetry by the controller protein C.Esp1396I based on the structure of the transcriptional activation complex.

McGeehan, J.E.Ball, N.J.Streeter, S.D.Thresh, S.J.Kneale, G.G.

(2012) Nucleic Acids Res. 40: 4158-4167

  • DOI: 10.1093/nar/gkr1250
  • Also Cited By: 4F8D, 4FBI, 4FN3, 4I6R, 4I6T, 4I6U, 4I8T, 4IA8, 4IVZ, 4IWR

  • PubMed Abstract: 
  • The controller protein C.Esp1396I regulates the timing of gene expression of the restriction-modification (RM) genes of the RM system Esp1396I. The molecular recognition of promoter sequences by such transcriptional regulators is poorly understood, i ...

    The controller protein C.Esp1396I regulates the timing of gene expression of the restriction-modification (RM) genes of the RM system Esp1396I. The molecular recognition of promoter sequences by such transcriptional regulators is poorly understood, in part because the DNA sequence motifs do not conform to a well-defined symmetry. We report here the crystal structure of the controller protein bound to a DNA operator site. The structure reveals how two different symmetries within the operator are simultaneously recognized by the homo-dimeric protein, underpinned by a conformational change in one of the protein subunits. The recognition of two different DNA symmetries through movement of a flexible loop in one of the protein subunits may represent a general mechanism for the recognition of pseudo-symmetric DNA sequences.


    Organizational Affiliation

    Biomolecular Structure Group, Institute of Biomedical and Biomolecular Sciences, School of Biological Sciences, University of Portsmouth, Portsmouth, Hampshire PO1 2DY, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
R-M CONTROLLER PROTEIN
A, B
82Enterobacter sp. RFL1396Gene Names: esp1396IC
Find proteins for Q8GGH0 (Enterobacter sp. RFL1396)
Go to UniProtKB:  Q8GGH0
Entity ID: 2
MoleculeChainsLengthOrganism
DNA (5'-D(*AP*TP*GP*TP*GP*AP*CP*TP*TP*AP*TP*AP*GP*TP*CP*CP*GP*TP*G)-3')C19N/A
Entity ID: 3
MoleculeChainsLengthOrganism
DNA (5'-D(*TP*CP*AP*CP*GP*GP*AP*CP*TP*AP*TP*AP*AP*GP*TP*CP*AP*CP*A)-3')D19N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.157 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 44.316α = 90.00
b = 61.546β = 90.00
c = 113.687γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XSCALEdata scaling
PHASERphasing
REFMACrefinement
MxCuBEdata collection
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-01-18
    Type: Initial release
  • Version 1.1: 2012-07-25
    Type: Database references