4ADZ

Crystal Structure of the apo form of a Copper-sensitive operon Regulator (CsoR) protein from Streptomyces lividans


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.185 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The Response to Copper Stress in Streptomyces Lividans Extends Beyond Genes Under the Direct Control of a Copper Sensitive Operon Repressor Protein (Csor)

Dwarakanath, S.Chaplin, A.K.Hough, M.A.Rigali, S.Vijgenboom, E.Worrall, J.A.R.

(2012) J.Biol.Chem. 287: 17833

  • DOI: 10.1074/jbc.M112.352740

  • PubMed Abstract: 
  • A copper-sensitive operon repressor protein (CsoR) has been identified in Streptomyces lividans (CsoR(Sl)) and found to regulate copper homeostasis with attomolar affinity for Cu(I). Solution studies reveal apo- and Cu(I)-CsoR(Sl) to be a tetramer as ...

    A copper-sensitive operon repressor protein (CsoR) has been identified in Streptomyces lividans (CsoR(Sl)) and found to regulate copper homeostasis with attomolar affinity for Cu(I). Solution studies reveal apo- and Cu(I)-CsoR(Sl) to be a tetramer assembly, and a 1.7-Å resolution crystal structure of apo-CsoR(Sl) reveals that a significant conformational change is necessary to enable Cu(I) binding. In silico prediction of the CsoR regulon was confirmed in vitro (EMSA) and in vivo (RNA-seq), which highlighted that next to the csoR gene itself, the regulon consists of two Cu(I) efflux systems involving a CopZ-like copper metallochaperone protein and a CopA P(1)-type ATPase. Although deletion of csoR has only minor effects on S. lividans development when grown under high copper concentrations, mutations of the Cu(I) ligands decrease tolerance to copper as a result of the Cu(I)-CsoR mutants failing to disengage from the DNA targets, thus inhibiting the derepression of the regulon. RNA-seq experiments carried out on samples incubated with exogenous copper and a ΔcsoR strain showed that the set of genes responding to copper stress is much wider than anticipated and largely extends beyond genes targeted by CsoR. This suggests more control levels are operating and directing other regulons in copper homeostasis beside the CsoR regulon.


    Organizational Affiliation

    School of Biological Sciences, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CSOR
A, B
136Streptomyces lividans TK24Mutation(s): 0 
Find proteins for D6EK73 (Streptomyces lividans TK24)
Go to UniProtKB:  D6EK73
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.185 
  • Space Group: P 21 2 21
Unit Cell:
Length (Å)Angle (°)
a = 41.630α = 90.00
b = 54.550β = 90.00
c = 91.750γ = 90.00
Software Package:
Software NamePurpose
BALBESphasing
MOSFLMdata reduction
SCALAdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-04-25
    Type: Initial release
  • Version 1.1: 2012-05-16
    Type: Other