1BQK

OXIDIZED PSEUDOAZURIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure determinations of oxidized and reduced pseudoazurins from Achromobacter cycloclastes. Concerted movement of copper site in redox forms with the rearrangement of hydrogen bond at a remote histidine.

Inoue, T.Nishio, N.Suzuki, S.Kataoka, K.Kohzuma, T.Kai, Y.

(1999) J Biol Chem 274: 17845-17852

  • DOI: 10.1074/jbc.274.25.17845
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The crystal structures of oxidized and reduced pseudoazurins from a denitrifying bacterium, Achromobacter cycloclastes IAM1013, have been determined at 1.35- and 1.6-A resolutions, respectively. The copper site in the oxidized state exhibits a distor ...

    The crystal structures of oxidized and reduced pseudoazurins from a denitrifying bacterium, Achromobacter cycloclastes IAM1013, have been determined at 1.35- and 1.6-A resolutions, respectively. The copper site in the oxidized state exhibits a distorted tetrahedral structure like those of other pseudoazurins. However, not only a small change of the copper geometry, but concerted peptide bond flips are identified. The imidazole ring of remote His6 has a hydrogen bonding distance of 2.73 A between N-delta1(His6) and O-gamma1(Thr36) in the oxidized protein. When the protein is reduced at pH 6.0, the imidazole ring rotates by 30.3 degrees and moves 1.00 A away from the position of the oxidized state. A new hydrogen bond between N-epsilon2(His6) and O-epsilon1(Glu4) is formed with a distance of 3.03 A, while the hydrogen bond between N-delta1(His6)-O-gamma1(Thr36) is maintained with an interatomic distance of 2.81 A. A concomitant peptide bond flip of main chain between Ile34 and Thr36 occurs.


    Related Citations: 
    • Crystal Structure Determinations of Oxidized and Reduced Pseudoazurin from Achromobacter Cycloclastes: A Redox-Induced Conformational Change Contains a Peptide Bond Flip
      () Thesis --: --
    • Crystallization and Preliminary X-Ray Studies on Pseudoazurin from Achromobacter Cycloclastes Iam1013
      Inoue, T., Nishio, N., Kai, Y., Harada, S., Ohshiro, Y., Suzuki, S., Kohzuma, T., Shidara, S., Iwasaki, H.
      (1993) J Biochem 114: 761

    Organizational Affiliation

    Department of Materials Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PSEUDOAZURINA124Achromobacter cycloclastesMutation(s): 0 
Gene Names: bcp
Find proteins for P19567 (Achromobacter cycloclastes)
Explore P19567 
Go to UniProtKB:  P19567
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CU
Query on CU

Download CCD File 
A
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.176 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.731α = 90
b = 61.544β = 90
c = 30.083γ = 90
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-08-17
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance