4JKN

Mercury Metallated Pseudomonas aeruginosa Azurin at 1.54 A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.54 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Mercury metallation of the copper protein azurin and structural insight into possible heavy metal reactivity.

Zampino, A.P.Masters, F.M.Bladholm, E.L.Panzner, M.J.Berry, S.M.Leeper, T.C.Ziegler, C.J.

(2014) J Inorg Biochem 141: 152-160

  • DOI: 10.1016/j.jinorgbio.2014.09.003
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Mercury(II) metallation of Pseudomonas aeruginosa azurin has been characterized structurally and biochemically. The X-ray crystal structure at 1.5Å of mercury(II) metallated azurin confirms the coordination of mercury at the copper binding active sit ...

    Mercury(II) metallation of Pseudomonas aeruginosa azurin has been characterized structurally and biochemically. The X-ray crystal structure at 1.5Å of mercury(II) metallated azurin confirms the coordination of mercury at the copper binding active site and a second surface site. These findings are further validated by NMR, Matrix-assisted laser desorption/ionization spectrometry (MALDI), and UV-visible spectroscopic methods indicating copper displacement from the wild-type protein. Bioinformatic analysis has identified homologous human protein domains computationally, and compared them to the structure of azurin, providing a model for human mercury interactions. Study of the mercury-azurin adduct, in combination with other known examples of protein-heavy metal interactions, could provide further insight into the chemical mechanisms of toxicological interactions, leading toward a global understanding of the biological speciation of toxic heavy metals.


    Organizational Affiliation

    Department of Chemistry, The University of Akron, Akron, OH 44325, USA. Electronic address: ziegler@uakron.edu.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Azurin
A, B, C, D
128Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: azuazu PA4922PA4922
EC: 1.20.9.1
Find proteins for P00282 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Go to UniProtKB:  P00282
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HG
Query on HG

Download CCD File 
A, B, C, D
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
NO3
Query on NO3

Download CCD File 
A, B, D
NITRATE ION
N O3
NHNBFGGVMKEFGY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.54 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.483α = 90
b = 79.228β = 90
c = 109.576γ = 90
Software Package:
Software NamePurpose
APEXdata collection
PHASESphasing
PHENIXrefinement
SAINTdata reduction
APEXdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-02-19
    Type: Initial release
  • Version 1.1: 2015-02-04
    Changes: Database references
  • Version 1.2: 2018-04-04
    Changes: Data collection