4DO3

Structure of FAAH with a non-steroidal anti-inflammatory drug

• PDB DOI: https://doi.org/10.2210/pdb4DO3/pdb

• Classification: HYDROLASE/HYDROLASE INHIBITOR
• Organism(s): Rattus norvegicus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2012-02-09 Released: 2013-01-23 
• Deposition Author(s): Garau, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.25 Å
• R-Value Free: 0.199 
• R-Value Work: 0.164 
• R-Value Observed: 0.166 

Starting Model: experimental

Literature

A Binding Site for Nonsteroidal Anti-inflammatory Drugs in Fatty Acid Amide Hydrolase.

Bertolacci, L., Romeo, E., Veronesi, M., Magotti, P., Albani, C., Dionisi, M., Lambruschini, C., Scarpelli, R., Cavalli, A., De Vivo, M., Piomelli, D., Garau, G.

(2013) J Am Chem Soc 135: 22-25

• PubMed: 23240907 
• DOI: https://doi.org/10.1021/ja308733u
• Primary Citation of Related Structures:  
  4DO3


• PubMed Abstract: 
  

  In addition to inhibiting the cyclooxygenase (COX)-mediated biosynthesis of prostanoids, various widely used nonsteroidal anti-inflammatory drugs (NSAIDs) enhance endocannabinoid signaling by blocking the anandamide-degrading membrane enzyme fatty acid amide hydrolase (FAAH). The X-ray structure of FAAH in complex with the NSAID carprofen, along with site-directed mutagenesis, enzyme activity assays, and NMR analysis, has revealed the molecular details of this interaction, providing information that may guide the design of dual FAAH-COX inhibitors with superior analgesic efficacy.

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Organizational Affiliation: 

Drug Discovery and Development, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genoa, Italy.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 126.61 kDa 
• Atom Count: 8,986 
• Modelled Residue Count: 1,087 
• Deposited Residue Count: 1,142 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fatty-acid amide hydrolase 1	A, B	571	Rattus norvegicus	Mutation(s): 0  Gene Names: Faah, Faah1 EC: 3.5.1.99 (PDB Primary Data), 3.1.1 (UniProt)
UniProt
Find proteins for P97612 (Rattus norvegicus) Explore P97612  Go to UniProtKB:  P97612

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
0LA	E [auth A], G [auth B]	(2S)-2-(6-chloro-9H-carbazol-2-yl)propanoic acid C15 H12 Cl N O2 PUXBGTOOZJQSKH-QMMMGPOBSA-N
OHO	D [auth A], F [auth B]	CYCLOHEXANE AMINOCARBOXYLIC ACID C7 H13 N O2 OQQXGCLLMDQESN-UHFFFAOYSA-N
CL	C [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Binding Affinity Annotations
ID	Source	Binding Affinity
0LA	BindingDB:  4DO3	IC50: min: 3.20e+4, max: 7.86e+4 (nM) from 3 assay(s)
	PDBBind:  4DO3	IC50: 7.90e+4 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.25 Å
• R-Value Free: 0.199 
• R-Value Work: 0.164 
• R-Value Observed: 0.166 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 103.47	α = 90
b = 104.37	β = 90
c = 147.62	γ = 90

Software Package:

Software Name	Purpose
MOSFLM	data reduction
MOLREP	phasing
REFMAC	refinement
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-01-23 
Deposition Author(s): Garau, G.

Revision History  

• Version 1.0: 2013-01-23
  Type: Initial release
  
• Version 1.1: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.2: 2024-11-06
  Changes: Structure summary