1AZN

CRYSTAL STRUCTURE OF THE AZURIN MUTANT PHE114ALA FROM PSEUDOMONAS AERUGINOSA AT 2.6 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Work: 0.185 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the azurin mutant Phe114Ala from Pseudomonas aeruginosa at 2.6 A resolution.

Tsai, L.C.Sjolin, L.Langer, V.Pascher, T.Nar, H.

(1995) Acta Crystallogr.,Sect.D 51: 168-176

  • DOI: 10.1107/S0907444994005627

  • PubMed Abstract: 
  • The crystal structure of azurin mutant Phe114Ala from Pseudomonas aeruginosa has been solved by molecular replacement. The final crystallographic R value is 0.185 for 9832 reflections to a resolution of 2.6 A. The root-mean-square deviation for main- ...

    The crystal structure of azurin mutant Phe114Ala from Pseudomonas aeruginosa has been solved by molecular replacement. The final crystallographic R value is 0.185 for 9832 reflections to a resolution of 2.6 A. The root-mean-square deviation for main-chain atom positions is 0.020 A between the four independent monomers in the asymmetric unit. The mutant Ala114 crystallized from PEG 4000 in a new crystal form and the crystals are monoclinic, P2(1), a= 51.0, b = 83.6, c= 66.4 A and beta = 110.5 degrees. The four molecules in the asymmetric unit are packed as a dimer of dimers and are related by an approximate twofold axis. The dimer packing and the dimer contact region are very similar to that of the Alcaligenes denitrificans azurin dimer. The mutation was performed at residue Phe114, which exhibits a pi-electron overlap with the copper ligand His117, to investigate its suggested role in the electron self-exchange reaction. Removal of steric constrains from the phenylalanine side chain created a somewhat different geometry around the copper site with an increased mobility of His117 resulting in an enlarged Cu-N length which may be responsible for the slight differences obtained in the spectral properties of the mutant versus the wild-type protein.


    Related Citations: 
    • X-Ray Crystal Structure of the Two Site-Specific Mutants His35Gln and His35Leu of Azurin from Pseudomonas Aeruginosa
      Nar, H.,Messerschmidt, A.,Huber, R.,Van De Kamp, M.,Canters, G.W.
      (1991) J.Mol.Biol. 218: 427


    Organizational Affiliation

    Department of Inorganic Chemistry, Chalmers University of Technology and The University of Göteborg, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AZURIN
A, B, C, D
128Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)Mutation(s): 0 
Gene Names: azu
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 1 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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Work: 0.185 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 51.000α = 90.00
b = 83.600β = 110.50
c = 66.400γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORphasing
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-10-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance