6WJE

Copper resistance protein copG- Form 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.194 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The bacterial copper-resistance protein CopG contains a cysteine-bridged tetranuclear copper cluster.

Hausrath, A.C.Ramirez, N.A.Ly, A.T.McEvoy, M.M.

(2020) J Biol Chem 

  • DOI: 10.1074/jbc.RA120.013907
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • CopG is an uncharacterized protein ubiquitous in gram-negative bacteria whose gene frequently occurs in clusters of copper-resistance genes and can be recognized by the presence of a conserved CxCC motif. To investigate its contribution to copper res ...

    CopG is an uncharacterized protein ubiquitous in gram-negative bacteria whose gene frequently occurs in clusters of copper-resistance genes and can be recognized by the presence of a conserved CxCC motif. To investigate its contribution to copper resistance, here we undertook a structural and biochemical characterization of the CopG protein from Pseudomonas aeruginosa Results from biochemical analyses of CopG purified under aerobic conditions indicate that it is a green copper-binding protein that displays absorbance maxima near 411, 581, and 721 nm and is monomeric in solution. Determination of the three-dimensional structure by X-ray crystallography revealed that CopG consists of a thioredoxin domain with a C-terminal extension that contributes to metal binding. We noted that adjacent to the CxCC motif is a cluster of four copper ions bridged by cysteine sulfur atoms. Structures of CopG in two oxidation states support the assignment of this protein as an oxidoreductase. On the basis of these structural and spectroscopic findings and also genetic evidence, we propose that CopG has a role in interconverting Cu(I) and Cu(II) to minimize toxic effects and facilitate export by the Cus RND transporter efflux system.


    Related Citations: 
    • Copper resistance protein copG- Form 2
      Hausrath, A.C., Ly, A.T., McEvoy, M.M.
      () To be published --: --

    Organizational Affiliation

    Institute for Society and Genetics/Dept. of Microbiology, Immunology, and Mloecular Genetics, UCLA, United States.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DUF411 domain-containing protein
A, B, E, F
126Pseudomonas aeruginosaMutation(s): 0 
Gene Names: FQ758_25220
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DUF411 domain-containing protein
C, D
126Pseudomonas aeruginosaMutation(s): 0 
Gene Names: FQ758_25220
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
A, B, C, D, E, F
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CU
Query on CU

Download CCD File 
A, B, C, D, E, F
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

Download CCD File 
A, C, D
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
OMT
Query on OMT
C,DL-PEPTIDE LINKINGC5 H11 N O4 SMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.194 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.7α = 90
b = 87.46β = 90
c = 143.27γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM079192

Revision History 

  • Version 1.0: 2020-06-24
    Type: Initial release
  • Version 1.1: 2020-07-08
    Changes: Database references