6SW1

Crystal Structure of P. aeruginosa PqsL: R41Y, I43R, G45R, C105G mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.190 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Photoinduced monooxygenation involving NAD(P)H-FAD sequential single-electron transfer.

Ernst, S.Rovida, S.Mattevi, A.Fetzner, S.Drees, S.L.

(2020) Nat Commun 11: 2600-2600

  • DOI: https://doi.org/10.1038/s41467-020-16450-y
  • Primary Citation of Related Structures:  
    6SW1, 6SW2

  • PubMed Abstract: 

    Light-dependent or light-stimulated catalysis provides a multitude of perspectives for implementation in technological or biomedical applications. Despite substantial progress made in the field of photobiocatalysis, the number of usable light-responsive enzymes is still very limited. Flavoproteins have exceptional potential for photocatalytic applications because the name-giving cofactor intrinsically features light-dependent reactivity, undergoing photoreduction with a variety of organic electron donors. However, in the vast majority of these enzymes, photoreactivity of the enzyme-bound flavin is limited or even suppressed. Here, we present a flavoprotein monooxygenase in which catalytic activity is controllable by blue light illumination. The reaction depends on the presence of nicotinamide nucleotide-type electron donors, which do not support the reaction in the absence of light. Employing various experimental approaches, we demonstrate that catalysis depends on a protein-mediated photoreduction of the flavin cofactor, which proceeds via a radical mechanism and a transient semiquinone intermediate.


  • Organizational Affiliation

    Institute for Molecular Microbiology and Biotechnology, University of Münster, Corrensstr. 3, 48149, Münster, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Probable FAD-dependent monooxygenase398Pseudomonas aeruginosa PAO1Mutation(s): 4 
Gene Names: pqsLPA4190
UniProt
Find proteins for Q9HWJ1 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HWJ1 
Go to UniProtKB:  Q9HWJ1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HWJ1
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.190 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.533α = 90
b = 65.751β = 90
c = 135.237γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-06-03
    Type: Initial release
  • Version 1.1: 2020-06-10
    Changes: Database references
  • Version 1.2: 2024-01-24
    Changes: Data collection, Database references, Refinement description