1E65

Azurin from Pseudomonas aeruginosa, apo form

Experimental Data Snapshot

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

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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

  • DOI: 10.1016/0014-5793(92)80981-l
  • Primary Citation of Related Structures:  
    1E65

  • 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. Form 1 closely resembles the holo-protein lacking copper ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
AZURINA, B, C, D128Pseudomonas aeruginosaMutation(s): 0 
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
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Work: 0.193 
  • R-Value Observed: 0.193 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.09α = 90
b = 81.1β = 90
c = 110.97γ = 90
Software Package:
Software NamePurpose
X-PLORrefinement
MADNESSdata reduction
ABSCORdata scaling
PROTEINdata scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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