3R6W

paAzoR1 binding to nitrofurazone


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.085 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.161 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Activation of nitrofurazone by azoreductases: multiple activities in one enzyme.

Ryan, A.Kaplan, E.Laurieri, N.Lowe, E.Sim, E.

(2011) Sci Rep 1: 63-63

  • DOI: 10.1038/srep00063

  • PubMed Abstract: 
  • Azoreductases are well known for azo pro-drug activation by gut flora. We show that azoreductases have a wider role in drug metabolism than previously thought as they can also reduce and hence activate nitrofurazone. Nitrofurazone, a nitroaromatic dr ...

    Azoreductases are well known for azo pro-drug activation by gut flora. We show that azoreductases have a wider role in drug metabolism than previously thought as they can also reduce and hence activate nitrofurazone. Nitrofurazone, a nitroaromatic drug, is a broad spectrum antibiotic which has until now been considered as activated in bacteria by nitroreductases. The structure of the azoreductase with nitrofurazone bound was solved at 2.08 Å and shows nitrofurazone in an active conformation. Based on the structural information, the kinetics and stoichiometry of nitrofurazone reduction by azoreductase from P. aeruginosa, we propose a mechanism of activation which accounts for the ability of azoreductases to reduce both azo and nitroaromatic drugs. This mode of activation can explain the cytotoxic side-effects of nitrofurazone through human azoreductase homologues.


    Organizational Affiliation

    Pharmacology Department, University of Oxford, OX1 3QT.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FMN-dependent NADH-azoreductase 1
A, B
212Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)Gene Names: azoR1
EC: 1.7.-.-
Find proteins for Q9I5F3 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Go to UniProtKB:  Q9I5F3
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

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

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Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
NFZ
Query on NFZ

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Download CCD File 
A
NITROFURAZONE
5-NITRO-2-FURALDEHYDE SEMICARBAZONE
C6 H6 N4 O4
IAIWVQXQOWNYOU-FPYGCLRLSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.085 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.161 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 82.202α = 90.00
b = 82.202β = 90.00
c = 108.462γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
PHENIXrefinement
PDB_EXTRACTdata extraction
PHASERphasing
SCALAdata scaling
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-24
    Type: Initial release
  • Version 1.1: 2012-03-07
    Type: Database references