4WLS

Crystal structure of the metal-free (repressor) form of E. Coli CUER, a copper efflux regulator, bound to COPA promoter DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.105 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Allosteric transcriptional regulation via changes in the overall topology of the core promoter.

Philips, S.J.Canalizo-Hernandez, M.Yildirim, I.Schatz, G.C.Mondragon, A.O'Halloran, T.V.

(2015) Science 349: 877-881

  • DOI: 10.1126/science.aaa9809
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Many transcriptional activators act at a distance from core promoter elements and work by recruiting RNA polymerase through protein-protein interactions. We show here how the prokaryotic regulatory protein CueR both represses and activates transcript ...

    Many transcriptional activators act at a distance from core promoter elements and work by recruiting RNA polymerase through protein-protein interactions. We show here how the prokaryotic regulatory protein CueR both represses and activates transcription by differentially modulating local DNA structure within the promoter. Structural studies reveal that the repressor state slightly bends the promoter DNA, precluding optimal RNA polymerase-promoter recognition. Upon binding a metal ion in the allosteric site, CueR switches into an activator conformation. It maintains all protein-DNA contacts but introduces torsional stresses that kink and undertwist the promoter, stabilizing an A-form DNA-like conformation. These factors switch on and off transcription by exerting dynamic control of DNA stereochemistry, reshaping the core promoter and making it a better or worse substrate for polymerase.


    Organizational Affiliation

    Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HTH-type transcriptional regulator CueR
A, B
128Escherichia coli (strain K12)Mutation(s): 2 
Gene Names: cueR (copR, ybbI)
Find proteins for P0A9G4 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A9G4
Entity ID: 2
MoleculeChainsLengthOrganism
COPA PROMOTER DNA NON-TEMPLATE STRANDX26synthetic construct
Entity ID: 3
MoleculeChainsLengthOrganism
COPA PROMOTER DNA TEMPLATE STRANDY26synthetic construct
Entity ID: 4
MoleculeChainsLengthOrganism
COPA PROMOTER DNA TEMPLATE STRAND (ALTERNATE CONFORMATION)U26synthetic construct
Entity ID: 5
MoleculeChainsLengthOrganism
COPA PROMOTER DNA NON-TEMPLATE STRAND (ALTERNATE CONFORMATION)V26synthetic construct
Small Molecules
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: 2.105 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.211 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 52.194α = 90.00
b = 63.653β = 90.00
c = 130.205γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
SCALAdata scaling
PHENIXphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited States5R01GM038784-26

Revision History 

  • Version 1.0: 2015-09-02
    Type: Initial release
  • Version 1.1: 2017-09-20
    Type: Author supporting evidence, Database references, Derived calculations