3ERX

High-resolution structure of Paracoccus pantotrophus pseudoazurin

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.25 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.189 

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This is version 1.1 of the entry. See complete history. 


Literature

The 1.4 A resolution structure of Paracoccus pantotrophus pseudoazurin.

Najmudin, S., Pauleta, S.R., Moura, I., Romao, M.J.

(2010) Acta Crystallogr Sect F Struct Biol Cryst Commun 66: 627-635

  • DOI: 10.1107/S1744309110013989
  • Primary Citation of Related Structures:  
    3ERX

  • PubMed Abstract: 

    • Pseudoazurins are small type 1 copper proteins that are involved in the flow of electrons between various electron donors and acceptors in the bacterial periplasm, mostly under denitrifying conditions. The previously determined structure of Paracoccus pantotrophus pseudoazurin in the oxidized form was improved to a nominal resolution of 1 ...

    Pseudoazurins are small type 1 copper proteins that are involved in the flow of electrons between various electron donors and acceptors in the bacterial periplasm, mostly under denitrifying conditions. The previously determined structure of Paracoccus pantotrophus pseudoazurin in the oxidized form was improved to a nominal resolution of 1.4 A, with R and R(free) values of 0.188 and 0.206, respectively. This high-resolution structure makes it possible to analyze the interactions between the monomers and the solvent structure in detail. Analysis of the high-resolution structure revealed the structural regions that are responsible for monomer-monomer recognition during dimer formation and for protein-protein interaction and that are important for partner recognition. The pseudoazurin structure was compared with other structures of various type 1 copper proteins and these were grouped into families according to similarities in their secondary structure; this may be useful in the annotation of copper proteins in newly sequenced genomes and in the identification of novel copper proteins.

    Related Citations: 
    • Paracoccus pantotrophus pseudoazurin is an electron donor to cytochrome c peroxidase
      Pauleta, S.R., Guerlesquin, F., Goodhew, C.F., Devreese, B., Van Beeumen, J., Pereira, A.S., Moura, I., Pettigrew, G.W.
      (2004) Biochemistry 43: 11214
    Organizational Affiliation: 

    REQUIMTE, Centro de Química Fina e Biotecnologia, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal. shabir@fmv.utl.pt



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PseudoazurinA, B123Paracoccus pantotrophusMutation(s): 0 
Gene Names: pazS
Find proteins for P80401 (Paracoccus pantotrophus)
Explore P80401 
Go to UniProtKB:  P80401
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.25 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.189 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 108.823α = 90
b = 56.993β = 126.22
c = 67.982γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-10-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance