3UE8

Kynurenine Aminotransferase II Inhibitors


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.22 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Discovery of Brain-Penetrant, Irreversible Kynurenine Aminotransferase II Inhibitors for Schizophrenia.

Dounay, A.B.Anderson, M.Bechle, B.M.Campbell, B.M.Claffey, M.M.Evdokimov, A.Evrard, E.Fonseca, K.R.Gan, X.Ghosh, S.Hayward, M.M.Horner, W.Kim, J.Y.McAllister, L.A.Pandit, J.Paradis, V.Parikh, V.D.Reese, M.R.Rong, S.Salafia, M.A.Schuyten, K.Strick, C.A.Tuttle, J.B.Valentine, J.Wang, H.Zawadzke, L.E.Verhoest, P.R.

(2012) ACS Med Chem Lett 3: 187-192

  • DOI: 10.1021/ml200204m

  • PubMed Abstract: 
  • Kynurenine aminotransferase (KAT) II has been identified as a potential new target for the treatment of cognitive impairment associated with schizophrenia and other psychiatric disorders. Following a high-throughput screen, cyclic hydroxamic acid PF- ...

    Kynurenine aminotransferase (KAT) II has been identified as a potential new target for the treatment of cognitive impairment associated with schizophrenia and other psychiatric disorders. Following a high-throughput screen, cyclic hydroxamic acid PF-04859989 was identified as a potent and selective inhibitor of human and rat KAT II. An X-ray crystal structure and (13)C NMR studies of PF-04859989 bound to KAT II have demonstrated that this compound forms a covalent adduct with the enzyme cofactor, pyridoxal phosphate (PLP), in the active site. In vivo pharmacokinetic and efficacy studies in rat show that PF-04859989 is a brain-penetrant, irreversible inhibitor and is capable of reducing brain kynurenic acid by 50% at a dose of 10 mg/kg (sc). Preliminary structure-activity relationship investigations have been completed and have identified the positions on this scaffold best suited to modification for further optimization of this novel series of KAT II inhibitors.


    Organizational Affiliation

    Pfizer Worldwide Research and Development , Neuroscience Chemistry, Eastern Point Road, Groton, Connecticut 06340, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Kynurenine/alpha-aminoadipate aminotransferase, mitochondrial
A, B
439Homo sapiensMutation(s): 0 
Gene Names: AADAT (KAT2)
Find proteins for Q8N5Z0 (Homo sapiens)
Go to Gene View: AADAT
Go to UniProtKB:  Q8N5Z0
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
09M
Query on 09M

Download SDF File 
Download CCD File 
A, B
(5-hydroxy-4-{[(1-hydroxy-2-oxo-1,2-dihydroquinolin-3-yl)amino]methyl}-6-methylpyridin-3-yl)methyl dihydrogen phosphate
C17 H18 N3 O7 P
ZKPXUQQBRMXHLJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.22 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.200 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 63.616α = 90.00
b = 116.597β = 90.00
c = 129.267γ = 90.00
Software Package:
Software NamePurpose
BUSTERrefinement
StructureStudiodata collection
HKL-2000data reduction
HKL-2000data scaling
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2012-02-01
    Type: Initial release
  • Version 1.1: 2018-04-18
    Type: Data collection, Database references