4N65

Crystal structure of paAzoR1 bound to anthraquinone-2-sulphonate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.164 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Identification of NAD(P)H Quinone Oxidoreductase Activity in Azoreductases from P. aeruginosa: Azoreductases and NAD(P)H Quinone Oxidoreductases Belong to the Same FMN-Dependent Superfamily of Enzymes.

Ryan, A.Kaplan, E.Nebel, J.C.Polycarpou, E.Crescente, V.Lowe, E.Preston, G.M.Sim, E.

(2014) PLoS One 9: e98551-e98551

  • DOI: 10.1371/journal.pone.0098551
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Water soluble quinones are a group of cytotoxic anti-bacterial compounds that are secreted by many species of plants, invertebrates, fungi and bacteria. Studies in a number of species have shown the importance of quinones in response to pathogenic ba ...

    Water soluble quinones are a group of cytotoxic anti-bacterial compounds that are secreted by many species of plants, invertebrates, fungi and bacteria. Studies in a number of species have shown the importance of quinones in response to pathogenic bacteria of the genus Pseudomonas. Two electron reduction is an important mechanism of quinone detoxification as it generates the less toxic quinol. In most organisms this reaction is carried out by a group of flavoenzymes known as NAD(P)H quinone oxidoreductases. Azoreductases have previously been separate from this group, however using azoreductases from Pseudomonas aeruginosa we show that they can rapidly reduce quinones. Azoreductases from the same organism are also shown to have distinct substrate specificity profiles allowing them to reduce a wide range of quinones. The azoreductase family is also shown to be more extensive than originally thought, due to the large sequence divergence amongst its members. As both NAD(P)H quinone oxidoreductases and azoreductases have related reaction mechanisms it is proposed that they form an enzyme superfamily. The ubiquitous and diverse nature of azoreductases alongside their broad substrate specificity, indicates they play a wide role in cellular survival under adverse conditions.


    Organizational Affiliation

    Department of Pharmacology, University of Oxford, Oxford, United Kingdom; Faculty of Science, Engineering and Computing, Kingston University, Kingston upon Thames, United Kingdom.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FMN-dependent NADH-azoreductase 1A, B212Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: azoR1PA0785
EC: 1.7 (PDB Primary Data), 1.7.1.17 (UniProt)
Find proteins for Q9I5F3 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9I5F3 
Go to UniProtKB:  Q9I5F3
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN

Download CCD File 
A, B
FLAVIN MONONUCLEOTIDE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
 Ligand Interaction
AQN
Query on AQN

Download CCD File 
A
9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid
C14 H8 O5 S
MMNWSHJJPDXKCH-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.164 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.89α = 90
b = 81.89β = 90
c = 109.38γ = 120
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
ADSCdata collection

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-06-11
    Type: Initial release
  • Version 1.1: 2014-06-18
    Changes: Database references