1PZA | pdb_00001pza

THE CRYSTAL STRUCTURES OF REDUCED PSEUDOAZURIN FROM ALCALIGENES FAECALIS S-6 AT TWO PH VALUES

• PDB DOI: https://doi.org/10.2210/pdb1PZA/pdb

• Classification: ELECTRON TRANSFER(CUPROPROTEIN)
• Organism(s): Alcaligenes faecalis
• Mutation(s): No 


• Deposited: 1994-09-06 Released: 1994-11-30 
• Deposition Author(s): Petratos, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Work: 
  0.168 (DCC) 
• R-Value Observed: 
  0.178 (Depositor) 

Literature

The crystal structures of reduced pseudoazurin from Alcaligenes faecalis S-6 at two pH values.

Vakoufari, E., Wilson, K.S., Petratos, K.

(1994) FEBS Lett 347: 203-206

• PubMed: 8034003 
• DOI: https://doi.org/10.1016/0014-5793(94)00544-3
• Primary Citation Related Structures: 
  1PZA, 1PZB


• PubMed Abstract: 
  

  The structures of the reduced (Cu1+) blue-copper protein pseudoazurin from Alcaligenes faecalis strain S-6 are refined at pH 7.8 and 4.4 using X-ray diffraction data to 1.8 A resolution. The final R-factors for the high and low pH structures are 0.178 and 0.177, respectively. Comparing the reduced pseudoazurin at pH 7.8 with the oxidised (Cu2+) molecule, small changes are observed in the vicinity of the copper site and on the protein surface. At pH 4.4 the copper substituent imidazole of His81 rotates away from the metal with a concurrent movement of the latter towards the plane of the remaining three ligands (S gamma-Cys78, N delta 1-His40 and S delta-Met86) thus the geometry of the copper site becomes planar trigonal.

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Organizational Affiliation: 
• Institute of Molecular Biology and Biotechnology (I.M.B.B),-F.O.R.T.H., Heraklion, Greece.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 13.45 kDa 
• Atom Count: 1,015 
• Modeled Residue Count: 120 
• Deposited Residue Count: 123 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PSEUDOAZURIN	A	123	Alcaligenes faecalis	Mutation(s): 0
UniProt
Find proteins for P04377 (Alcaligenes faecalis) Explore P04377  Go to UniProtKB:  P04377

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CU	B [auth A]	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Work:  0.168 (DCC) 
• R-Value Observed: 0.178 (Depositor) 

Space Group: P 6₅

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.9	α = 90
b = 49.9	β = 90
c = 99.1	γ = 120

Software Package:

Software Name	Purpose
PROLSQ	refinement
PROTIN	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1994-11-30 
Deposition Author(s): Petratos, K.

Revision History  

• Version 1.0: 1994-11-30
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2024-02-14
  Changes: Data collection, Database references, Derived calculations