5FN0

Crystal structure of Pseudomonas fluorescens kynurenine-3- monooxygenase (KMO) in complex with GSK180


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.19 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.157 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Kynurenine-3-Monooxygenase Inhibition Prevents Multiple Organ Failure in Rodent Models of Acute Pancreatitis.

Mole, D.J.Webster, S.P.Uings, I.Zheng, X.Binnie, M.Wilson, K.Hutchinson, J.P.Mirguet, O.Walker, A.Beaufils, B.Ancellin, N.Trottet, L.Beneton, V.Mowat, C.G.Wilkinson, M.Rowland, P.Haslam, C.Mcbride, A.Homer, N.Z.Baily, J.E.Sharp, M.G.Garden, O.J.Hughes, J.Howie, S.E.Holmes, D.S.Liddle, J.Iredale, J.P.

(2016) Nat.Med. (N.Y.) 22: 202

  • DOI: 10.1038/nm.4020

  • PubMed Abstract: 
  • Acute pancreatitis (AP) is a common and devastating inflammatory condition of the pancreas that is considered to be a paradigm of sterile inflammation leading to systemic multiple organ dysfunction syndrome (MODS) and death. Acute mortality from AP-M ...

    Acute pancreatitis (AP) is a common and devastating inflammatory condition of the pancreas that is considered to be a paradigm of sterile inflammation leading to systemic multiple organ dysfunction syndrome (MODS) and death. Acute mortality from AP-MODS exceeds 20% (ref. 3), and the lifespans of those who survive the initial episode are typically shorter than those of the general population. There are no specific therapies available to protect individuals from AP-MODS. Here we show that kynurenine-3-monooxygenase (KMO), a key enzyme of tryptophan metabolism, is central to the pathogenesis of AP-MODS. We created a mouse strain that is deficient for Kmo (encoding KMO) and that has a robust biochemical phenotype that protects against extrapancreatic tissue injury to the lung, kidney and liver in experimental AP-MODS. A medicinal chemistry strategy based on modifications of the kynurenine substrate led to the discovery of the oxazolidinone GSK180 as a potent and specific inhibitor of KMO. The binding mode of the inhibitor in the active site was confirmed by X-ray co-crystallography at 3.2 Å resolution. Treatment with GSK180 resulted in rapid changes in the levels of kynurenine pathway metabolites in vivo, and it afforded therapeutic protection against MODS in a rat model of AP. Our findings establish KMO inhibition as a novel therapeutic strategy in the treatment of AP-MODS, and they open up a new area for drug discovery in critical illness.


    Organizational Affiliation

    Medical Research Council Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
KYNURENINE 3-MONOOXYGENASE
A, B, C, D
461Pseudomonas fluorescensMutation(s): 2 
Gene Names: kmo (qbsG)
EC: 1.14.13.9
Find proteins for Q84HF5 (Pseudomonas fluorescens)
Go to UniProtKB:  Q84HF5
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download SDF File 
Download CCD File 
A, B, C, D
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
JHY
Query on JHY

Download SDF File 
Download CCD File 
A, B, C, D
3-(5,6-DICHLORO-2-OXOBENZO[D]OXAZOL-3(2H)-YL)PROPANOIC ACID
C10 H7 Cl2 N O4
MIGAKMWKMLYGJX-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.19 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.157 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 186.850α = 90.00
b = 105.290β = 90.00
c = 133.640γ = 90.00
Software Package:
Software NamePurpose
BUSTERrefinement
Aimlessdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2016-01-13
    Type: Initial release
  • Version 1.1: 2016-01-20
    Type: Database references
  • Version 1.2: 2016-03-02
    Type: Database references