1E65

Azurin from Pseudomonas aeruginosa, apo form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal Structure of Pseudomonas Aeruginosa Apo-Azurin at 1.85 A Resolution.

Nar, H.Messerschmidt, A.Huber, R.Van De Kamp, M.Canters, G.W.

(1992) FEBS Lett. 306: 119


  • PubMed Abstract: 
  • The 3D structure of apo-azurin from Pseudomonas aeruginosa has been determined at 1.85 A resolution. The crystal structure is composed of two different molecular forms of apo-azurin arranged as hetero-dimers in the tetramer of the asymmetric unit. Fo ...

    The 3D structure of apo-azurin from Pseudomonas aeruginosa has been determined at 1.85 A resolution. The crystal structure is composed of two different molecular forms of apo-azurin arranged as hetero-dimers in the tetramer of the asymmetric unit. Form 1 closely resembles the holo-protein lacking copper. Form 2 shows differences in the metal binding site region induced by the incorporation of a solvent molecule into this site. The positions of the copper ligands His46 and His117 are shifted by 0.6 A and 1.6 A. The His117 side chain adopts a position at the surface of the protein, thereby facilitating access to the copper site. The presence of two different molecular forms of apo-azurin in the crystal lattice may reflect an equilibrium between the two forms in solution. 1H-NMR spectra of apo-azurin recorded as a function of pH show that at high pH the line broadening of His35, His46 and His117 resonances is consistent with an interconversion between forms 1 and 2. At low pH, no broadening is observed. This may indicate that here the interconversion is fast on the NMR timescale.


    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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Work: 0.193 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 57.090α = 90.00
b = 81.100β = 90.00
c = 110.970γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
PROTEINdata scaling
MADNESSdata reduction
ABSCORdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-08-16
    Type: Initial release
  • Version 1.1: 2013-11-13
    Type: Derived calculations, Non-polymer description, Other, Source and taxonomy, Structure summary, Version format compliance
  • Version 1.2: 2017-07-05
    Type: Data collection
  • Version 1.3: 2017-07-12
    Type: Refinement description