1ILS

X-RAY CRYSTAL STRUCTURE THE TWO SITE-SPECIFIC MUTANTS ILE7SER AND PHE110SER OF AZURIN FROM PSEUDOMONAS AERUGINOSA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Work: 0.169 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

X-ray crystal structure of the two site-specific mutants Ile7Ser and Phe110Ser of azurin from Pseudomonas aeruginosa.

Hammann, C.Messerschmidt, A.Huber, R.Nar, H.Gilardi, G.Canters, G.W.

(1996) J.Mol.Biol. 255: 362-366

  • DOI: 10.1006/jmbi.1996.0029
  • Primary Citation of Related Structures:  1ILU

  • PubMed Abstract: 
  • The blue copper protein azurin from Pseudomonas aeruginosa contains a single Trp residue that is believed to be involved in the inducible intramolecular electron transfer from a disulphide group to the copper centre. This residue shows in fluorescenc ...

    The blue copper protein azurin from Pseudomonas aeruginosa contains a single Trp residue that is believed to be involved in the inducible intramolecular electron transfer from a disulphide group to the copper centre. This residue shows in fluorescence spectra the highest energy emission of tryptophan-containing compounds at room temperature, which is explained by its rigid and highly hydrophobic environment. In order to investigate the role of the Trp residue in electron transfer and the influence of its environment, two mutations (17S and F110S) were introduced that were thought to increase the polarity and the mobility in its environment. The crystal structures of these mutants were solved at 2.2 A and 2.3 A resolution, respectively. These provide a structural basis for the changes observed in fluorescence spectra compared with the wild-type protein. We conclude from our results that these changes are not caused by a change in the dynamics of the Trp residue itself, but exclusively by an increased effective dielectric constant of the microenvironment of Trp48 and by changes in mobility of the mutated residues.


    Related Citations: 
    • Crystal Structure Analysis of Oxidized Pseudomonas Aeruginosa Azurin at Ph 5.5 And Ph 9.0
      Nar, H.,Messerschmidt, A.,Huber, R.,Van De Kamp, M.,Canters, G.W.
      (1991) J.Mol.Biol. 221: 765


    Organizational Affiliation

    Max-Planck-Institut für Biochemie, Abteilung Strukturforschung, Martinsried bei München, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AZURIN
A, B, C, D
128Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228)Gene Names: azu
Find proteins for P00282 (Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228))
Go to UniProtKB:  P00282
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CU
Query on CU

Download SDF File 
Download CCD File 
A, B, C, D
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
NO3
Query on NO3

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Work: 0.169 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 57.600α = 90.00
b = 80.700β = 90.00
c = 110.000γ = 90.00
Software Package:
Software NamePurpose
MADNESdata reduction
MADNESdata collection
X-PLORmodel building
ABSCORdata reduction
X-PLORrefinement
X-PLORphasing
ABSCORdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-03-08
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance