Evidence map›Paper›PMID 22040171›Full record

ArticleJournal of proteome research2012

Mass spectrometric characterization of human N-acylethanolamine-hydrolyzing acid amidase.

Jay M West, Nikolai Zvonok, Kyle M Whitten, Jodianne T Wood, Alexandros Makriyannis

Open access · greenAbstract read
In one paragraph

Article in Journal of proteome research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.0field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 36 citations in OpenAlex.

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  7. Molecular mechanism of activation of the immunoregulatory amidase NAAA.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Jay M WestCenter for Drug Discovery, Northeastern University , Boston, Massachusetts 02115, United States.
Nikolai Zvonok
Kyle M Whitten
Jodianne T Wood
Alexandros Makriyannis
Northeastern University · US

Funding

Project 3 - In vivo pharmacology of cannabinoid receptor probesP01DA009158 · NIDA · UNIVERSITY OF CONNECTICUT STORRS · PI Alexandros Makriyannis · 1994 to 2026
$26.0M
Training Program in Medications Development for Drugs of Abuse (Institutional RutT32DA007312 · NIDA · UNIVERSITY OF CONNECTICUT STORRS · PI MAKRIYANNIS, ALEXANDROS · 1999 to 2013
$4.1M
MOLECULAR BASIS OF CANNABINOID ACITIVITYR37DA003801 · NIDA · UNIVERSITY OF CONNECTICUT STORRS · PI MAKRIYANNIS, ALEXANDROS · 1997 to 2006
$3.7M
MOLECULAR BASIS OF CANNABINOID ACTIVITYR01DA003801 · NIDA · UNIVERSITY OF CONNECTICUT STORRS · PI MAKRIYANNIS, ALEXANDROS · 1985 to 2017
$2.5M
NIDA NIH HHS DA003801NIDA NIH HHS DA007312NIDA NIH HHS DA009158NIDA NIH HHS P01 DA009158NIDA NIH HHS R01 DA003801NIDA NIH HHS R37 DA003801NIDA NIH HHS T32 DA007312
6 · The paper itself

Abstract

N-Acylethanolamine-hydrolyzing acid amidase (NAAA) is a lysosomal enzyme that primarily degrades palmitoylethanolamine (PEA), a lipid amide that inhibits inflammatory responses. We developed a HEK293 cell line stably expressing the NAAA pro-enzyme (zymogen) and a single step chromatographic purification of the protein from the media. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry MALDI-TOF MS analysis of the zymogen (47.7 kDa) treated with peptide-N-glycosidase F (PNGase F) identified 4 glycosylation sites, and acid cleavage of the zymogen into α- and β-subunits (14.6 and 33.3 kDa) activated the enzyme. Size exclusion chromatography estimated the mass of the active enzyme as 45 ± 3 kDa, suggesting formation of an α/β heterodimer. MALDI-TOF MS fingerprinting covered more than 80% of the amino acid sequence, including the N-terminal peptides, and evidence for the lack of a disulfide bond between subunits. The significance of the cysteine residues was established by their selective alkylation resulting in almost complete loss of activity. The purified enzyme was kinetically characterized with PEA and a novel fluorogenic substrate, N-(4-methyl coumarin) palmitamide (PAMCA). The production of sufficient quantities of NAAA and a high throughput assay could be useful in discovering novel inhibitors and determining the structure and function of this enzyme.

Indexed as

AmidesAmidohydrolasesAmino Acid SequenceChromatography, GelEndocannabinoidsEnzyme PrecursorsEthanolaminesGlycosylationHEK293 CellsHumansKineticsMolecular Sequence DataMolecular WeightPalmitic AcidsPeptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine AmidaseProtein SubunitsAmidesAmidohydrolasesEndocannabinoidsEnzyme PrecursorsEthanolaminesNAAA protein, humanpalmidrolPalmitic AcidsPeptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine AmidaseProtein Subunits

Identifiers

PMID22040171
PMCPMC3706083
OpenAlexW2082286813

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.