1ILU

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: 2.30 Å
  • R-Value Work: 0.171 
  • R-Value Observed: 0.171 

wwPDB Validation   3D Report Full Report


This is version 1.4 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: https://doi.org/10.1006/jmbi.1996.0029
  • Primary Citation of Related Structures:  
    1ILS, 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 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.


  • Organizational Affiliation

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


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
AZURIN128Pseudomonas aeruginosaMutation(s): 1 
UniProt
Find proteins for P00282 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore P00282 
Go to UniProtKB:  P00282
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00282
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CU
Query on CU

Download Ideal Coordinates CCD File 
M [auth A]
N [auth B]
O [auth C]
P [auth D]
Q [auth E]
M [auth A],
N [auth B],
O [auth C],
P [auth D],
Q [auth E],
R [auth F],
S [auth G],
T [auth H],
U [auth I],
V [auth K],
W [auth L],
X [auth M]
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Work: 0.171 
  • R-Value Observed: 0.171 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.4α = 90
b = 170.1β = 91.3
c = 99.7γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
CCP4data collection
Agrovatadata collection
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-03-08
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-11-03
    Changes: Database references, Derived calculations, Refinement description
  • Version 1.4: 2024-10-09
    Changes: Data collection, Structure summary