3OJ8

Alpha-Ketoheterocycle Inhibitors of Fatty Acid Amide Hydrolase Containing Additional Conformational Contraints in the Acyl Side Chain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.154 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

alpha-Ketoheterocycle Inhibitors of Fatty Acid Amide Hydrolase Containing Additional Conformational Contraints in the Acyl Side Chain

Ezzili, C.Mileni, M.McGlinchey, N.Long, J.Z.Kinsey, S.G.Hochstatter, D.G.Stevens, R.C.Lichtman, A.H.Cravatt, B.F.Bilsky, E.J.Boger, D.L.

(2011) J.Med.Chem. 54: 2805-2822

  • DOI: 10.1021/jm101597x

  • PubMed Abstract: 
  • A series of α-ketooxazoles containing conformational constraints in the C2 acyl side chain of 2 (OL-135) were examined as inhibitors of fatty acid amide hydrolase (FAAH). Only one of the two possible enantiomers displayed potent FAAH inhibition (S vs ...

    A series of α-ketooxazoles containing conformational constraints in the C2 acyl side chain of 2 (OL-135) were examined as inhibitors of fatty acid amide hydrolase (FAAH). Only one of the two possible enantiomers displayed potent FAAH inhibition (S vs R enantiomer), and their potency is comparable or improved relative to 2, indicating that the conformational restriction in the C2 acyl side chain is achievable. A cocrystal X-ray structure of the α-ketoheterocycle 12 bound to a humanized variant of rat FAAH revealed its binding details, confirmed that the (S)-enantiomer is the bound active inhibitor, shed light on the origin of the enantiomeric selectivity, and confirmed that the catalytic Ser241 is covalently bound to the electrophilic carbonyl as a deprotonated hemiketal. Preliminary in vivo characterization of the inhibitors 12 and 14 is reported demonstrating that they raise brain anandamide levels following either intraperitoneal (ip) or oral (po) administration indicative of effective in vivo FAAH inhibition. Significantly, the oral administration of 12 caused dramatic accumulation of anandamide in the brain, with peak levels achieved between 1.5 and 3 h, and these elevations were maintained over 9 h. Additional studies of these two representative members of the series (12 and 14) in models of thermal hyperalgesia and neuropathic pain are reported, including the demonstration that 12 administered orally significantly attenuated mechanical (>6 h) and cold (>9 h) allodynia for sustained periods consistent with its long-acting effects in raising the endogenous concentration of anandamide.


    Organizational Affiliation

    Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fatty-acid amide hydrolase 1
A, B
573Rattus norvegicusMutation(s): 6 
Gene Names: Faah (Faah1)
EC: 3.5.1.99
Find proteins for P97612 (Rattus norvegicus)
Go to UniProtKB:  P97612
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OJ8
Query on OJ8

Download SDF File 
Download CCD File 
A, B
(S)-[(2S)-6-phenoxy-1,2,3,4-tetrahydronaphthalen-2-yl](5-pyridin-2-yl-1,3-oxazol-2-yl)methanol
C25 H22 N2 O3
HNDDBEODXBNDLJ-CYFREDJKSA-N
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
OJ8Kd: 4.4 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.154 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 103.299α = 90.00
b = 103.299β = 90.00
c = 253.355γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHENIXrefinement
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-07-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance