3P80

Pentaerythritol tetranitrate reductase co-crystal structure containing bound (E)-1-(3'-hydroxyphenyl)-2-nitroethene


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.155 
  • R-Value Work: 0.131 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A Site-Saturated Mutagenesis Study of Pentaerythritol Tetranitrate Reductase Reveals that Residues 181 and 184 Influence Ligand Binding, Stereochemistry and Reactivity.

Toogood, H.S.Fryszkowska, A.Hulley, M.Sakuma, M.Mansell, D.Stephens, G.M.Gardiner, J.M.Scrutton, N.S.

(2011) Chembiochem 12: 738-749

  • DOI: 10.1002/cbic.201000662
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • We have conducted a site-specific saturation mutagenesis study of H181 and H184 of flavoprotein pentaerythritol tetranitrate reductase (PETN reductase) to probe the role of these residues in substrate binding and catalysis with a variety of α,β-unsat ...

    We have conducted a site-specific saturation mutagenesis study of H181 and H184 of flavoprotein pentaerythritol tetranitrate reductase (PETN reductase) to probe the role of these residues in substrate binding and catalysis with a variety of α,β-unsaturated alkenes. Single mutations at these residues were sufficient to dramatically increase the enantiopurity of products formed by reduction of 2-phenyl-1-nitropropene. In addition, many mutants exhibited a switch in reactivity to predominantly catalyse nitro reduction, as opposed to CC reduction. These mutants showed an enhancement in a minor side reaction and formed 2-phenylpropanal oxime from 2-phenyl-1-nitropropene. The multiple binding conformations of hydroxy substituted nitro-olefins in PETN reductase were examined by using both structural and catalytic techniques. These compounds were found to bind in both active and inhibitory complexes; this highlights the plasticity of the active site and the ability of the H181/H184 couple to coordinate with multiple functional groups. These properties demonstrate the potential to use PETN reductase as a scaffold in the development of industrially useful biocatalysts.


    Organizational Affiliation

    Faculty of Life Sciences, University of Manchester, 131 Princess Street, Manchester M1 7DN, UK. helen.toogood@manchester.ac.uk




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Pentaerythritol tetranitrate reductase
A
365Enterobacter cloacaeMutation(s): 0 
Gene Names: onr
Find proteins for P71278 (Enterobacter cloacae)
Go to UniProtKB:  P71278
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN

Download SDF File 
Download CCD File 
A
FLAVIN MONONUCLEOTIDE
RIBOFLAVIN MONOPHOSPHATE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
 Ligand Interaction
P80
Query on P80

Download SDF File 
Download CCD File 
A
3-[(E)-2-nitroethenyl]phenol
(E)-1-(3'-hydroxyphenyl)-2-nitroethene
C8 H7 N O3
DHTXBJQMDPODIB-SNAWJCMRSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.155 
  • R-Value Work: 0.131 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 57.494α = 90.00
b = 70.642β = 90.00
c = 88.956γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
ADSCdata collection
REFMACrefinement
PDB_EXTRACTdata extraction
SCALAdata scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-03-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance