Evidence map›Paper›PMID 25406072›Full record

ArticleBiochemistry2014

Mechanistic and structural analysis of Drosophila melanogaster arylalkylamine N-acetyltransferases.

Daniel R Dempsey, Kristen A Jeffries, Jason D Bond, Anne-Marie Carpenter, Santiago Rodriguez-Ospina, Leonid Breydo, K Kenneth Caswell, David J Merkler

Abstract readComparative Study
In one paragraph

Article in Biochemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.5field-weighted citation impact, top 19% 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

21 citing papers in PubMed, 34 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Insects · 2021
    Article
  6. Gcn5-RelatedFrontiers in molecular biosciences · 2021
    Article
  7. Article
  8. G3 (Bethesda, Md.) · 2020
    Article
  9. Article
  10. Article
  11. Editorial: Aromatic Amino Acid Metabolism.Frontiers in molecular biosciences · 2019
    Article
  12. Bm-iAANAT and its potential role in fatty acid amide biosynthesis in Bombyx mori.Prostaglandins, leukotrienes, and essential fatty acids · 2018
    Article
  13. Article
  14. Insect ArylalkylamineFrontiers in molecular biosciences · 2018
    Review
  15. Insect ArylalkylamineBiochemistry & molecular biology journal · 2018
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

8 authors at 2 institutions in 1 country.

Daniel R DempseyDepartment of Chemistry, University of South Florida , Tampa, Florida 33620, United States.
Kristen A Jeffries
Jason D Bond
Anne-Marie Carpenter
Santiago Rodriguez-Ospina
Leonid Breydo
K Kenneth Caswell
David J Merkler
University of South Florida · USUniversity of South Florida Sarasota–Manatee · US

Funding

Subtraction LipidomicsR15GM107864 · NIGMS · UNIVERSITY OF SOUTH FLORIDA · PI MERKLER, DAVID J · 2015 to 2017
$386k
Glycine N-AcyltransferasesR03DA034323 · NIDA · UNIVERSITY OF SOUTH FLORIDA · PI MERKLER, DAVID J · 2012 to 2013
$136k
NIDA NIH HHS R03 DA034323NIDA NIH HHS R03-DA034323NIGMS NIH HHS R15 GM107864
6 · The paper itself

Abstract

Arylalkylamine N-acetyltransferase (AANAT) catalyzes the penultimate step in the biosynthesis of melatonin and other N-acetylarylalkylamides from the corresponding arylalkylamine and acetyl-CoA. The N-acetylation of arylalkylamines is a critical step in Drosophila melanogaster for the inactivation of the bioactive amines and the sclerotization of the cuticle. Two AANAT variants (AANATA and AANATB) have been identified in D. melanogaster, in which AANATA differs from AANATB by the truncation of 35 amino acids from the N-terminus. We have expressed and purified both D. melanogaster AANAT variants (AANATA and AANATB) in Escherichia coli and used the purified enzymes to demonstrate that this N-terminal truncation does not affect the activity of the enzyme. Subsequent characterization of the kinetic and chemical mechanism of AANATA identified an ordered sequential mechanism, with acetyl-CoA binding first, followed by tyramine. We used a combination of pH-activity profiling and site-directed mutagenesis to study prospective residues believed to function in AANATA catalysis. These data led to an assignment of Glu-47 as the general base in catalysis with an apparent pKa of 7.0. Using the data generated for the kinetic mechanism, structure-function relationships, pH-rate profiles, and site-directed mutagenesis, we propose a chemical mechanism for AANATA.

Indexed as

BiocatalysisModels, MolecularAcetylationAcetyl Coenzyme AAmino Acid SubstitutionAnimalsArylalkylamine N-AcetyltransferaseCatalytic DomainDrosophila melanogasterDrosophila ProteinsEnzyme InhibitorsGlutamic AcidHydrogen-Ion ConcentrationIsoenzymesKineticsLigandsAcetyl Coenzyme AArylalkylamine N-AcetyltransferaseDrosophila ProteinsEnzyme InhibitorsGlutamic AcidIsoenzymesLigandsMutant ProteinsN-acetyltyramineTyramine

Identifiers

PMID25406072
PMCPMC4270386
OpenAlexW2080082459

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.