6DXZ

Rabbit N-acylethanolamine-hydrolyzing acid amidase (NAAA) in complex with non-covalent benzothiazole-piperazine inhibitor ARN19702, in presence of Triton X-100


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history


Literature

Molecular mechanism of activation of the immunoregulatory amidase NAAA.

Gorelik, A.Gebai, A.Illes, K.Piomelli, D.Nagar, B.

(2018) Proc Natl Acad Sci U S A 115: E10032-E10040

  • DOI: 10.1073/pnas.1811759115
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Palmitoylethanolamide is a bioactive lipid that strongly alleviates pain and inflammation in animal models and in humans. Its signaling activity is terminated through degradation by N -acylethanolamine acid amidase (NAAA), a cysteine hydrolas ...

    Palmitoylethanolamide is a bioactive lipid that strongly alleviates pain and inflammation in animal models and in humans. Its signaling activity is terminated through degradation by N -acylethanolamine acid amidase (NAAA), a cysteine hydrolase expressed at high levels in immune cells. Pharmacological inhibitors of NAAA activity exert profound analgesic and antiinflammatory effects in rodent models, pointing to this protein as a potential target for therapeutic drug discovery. To facilitate these efforts and to better understand the molecular mechanism of action of NAAA, we determined crystal structures of this enzyme in various activation states and in complex with several ligands, including both a covalent and a reversible inhibitor. Self-proteolysis exposes the otherwise buried active site of NAAA to allow catalysis. Formation of a stable substrate- or inhibitor-binding site appears to be conformationally coupled to the interaction of a pair of hydrophobic helices in the enzyme with lipid membranes, resulting in the creation of a linear hydrophobic cavity near the active site that accommodates the ligand's acyl chain.


    Organizational Affiliation

    Department of Biochemistry, McGill University, Montreal, H3G0B1, Canada; bhushan.nagar@mcgill.ca.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
N-acylethanolamine acid amidase alpha-subunit
A
107Oryctolagus cuniculusMutation(s): 0 
Gene Names: NAAA
EC: 3.5.1.60
Find proteins for G1T7U7 (Oryctolagus cuniculus)
Go to UniProtKB:  G1T7U7
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
N-acylethanolamine acid amidase beta-subunit
B
232Oryctolagus cuniculusMutation(s): 0 
Gene Names: NAAA
EC: 3.5.1.60
Find proteins for G1T7U7 (Oryctolagus cuniculus)
Go to UniProtKB:  G1T7U7
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
WTF
Query on WTF

Download CCD File 
B
[2-(ethylsulfonyl)phenyl][(2S)-4-(6-fluoro-1,3-benzothiazol-2-yl)-2-methylpiperazin-1-yl]methanone
C21 H22 F N3 O3 S2
UKQOLPNYRVPCBM-AWEZNQCLSA-N
 Ligand Interaction
TRT
Query on TRT

Download CCD File 
A
FRAGMENT OF TRITON X-100
C21 H36 O4
HEUDUECKTWTQQR-UHFFFAOYSA-N
 Ligand Interaction
TON
Query on TON

Download CCD File 
B
2-{2-[4-(1,1,3,3-TETRAMETHYLBUTYL)PHENOXY]ETHOXY}ETHANOL
C18 H30 O3
LBCZOTMMGHGTPH-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
27L
Query on 27L

Download CCD File 
A
4-(2,4,4-trimethylpentan-2-yl)phenol
C14 H22 O
ISAVYTVYFVQUDY-UHFFFAOYSA-N
 Ligand Interaction
K
Query on K

Download CCD File 
A
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.186 
  • Space Group: P 43 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 159.143α = 90
b = 159.143β = 90
c = 159.143γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Canadian Institutes of Health Research (CIHR)CanadaMOP-133535

Revision History 

  • Version 1.0: 2018-09-26
    Type: Initial release
  • Version 1.1: 2018-10-10
    Changes: Data collection, Database references, Structure summary
  • Version 1.2: 2018-10-24
    Changes: Data collection, Database references, Structure summary
  • Version 1.3: 2018-11-07
    Changes: Data collection, Database references
  • Version 1.4: 2019-04-17
    Changes: Data collection, Structure summary
  • Version 1.5: 2020-01-08
    Changes: Author supporting evidence