2FQD

Crystal Structures of E. coli Laccase CueO under different copper binding situations


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.165 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structures of E. coli laccase CueO at different copper concentrations.

Li, X.Wei, Z.Zhang, M.Peng, X.Yu, G.Teng, M.Gong, W.

(2007) Biochem.Biophys.Res.Commun. 354: 21-26

  • DOI: 10.1016/j.bbrc.2006.12.116
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • CueO protein is a hypothetical bacterial laccase and a good laccase candidate for large scale industrial application. Four CueO crystal structures were determined at different copper concentrations. Low copper occupancy in apo-CueO and slow copper re ...

    CueO protein is a hypothetical bacterial laccase and a good laccase candidate for large scale industrial application. Four CueO crystal structures were determined at different copper concentrations. Low copper occupancy in apo-CueO and slow copper reconstitution process in CueO with exogenous copper were demonstrated. These observations well explain the copper dependence of CueO oxidase activity. Structural comparison between CueO and other three fungal laccase proteins indicates that Glu106 in CueO constitutes the primary counter-work for reconstitution of the trinuclear copper site. Mutation of Glu106 to a Phe enhanced CueO oxidation activity and supported this hypothesis. In addition, an extra alpha-helix from Leu351 to Gly378 covers substrate biding pocket of CueO and might compromises the electron transfer from substrate to type I copper.


    Organizational Affiliation

    Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Blue copper oxidase cueO
A
488Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: cueO (yacK)
Find proteins for P36649 (Escherichia coli (strain K12))
Go to UniProtKB:  P36649
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CIT
Query on CIT

Download SDF File 
Download CCD File 
A
CITRIC ACID
C6 H8 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-N
 Ligand Interaction
C2O
Query on C2O

Download SDF File 
Download CCD File 
A
CU-O-CU LINKAGE
Cu2 O
BERDEBHAJNAUOM-UHFFFAOYSA-N
 Ligand Interaction
CU
Query on CU

Download SDF File 
Download CCD File 
A
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.165 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 69.343α = 90.00
b = 73.319β = 90.00
c = 183.676γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
PDB_EXTRACTdata extraction
SCALEPACKdata scaling
MAR345data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-01-30
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-18
    Type: Refinement description