Evidence map›Paper›PMID 21454531›Full record

ArticleThe Journal of biological chemistry2011

N-acetylaspartylglutamate synthetase II synthesizes N-acetylaspartylglutamylglutamate.

Julia Lodder-Gadaczek, Ivonne Becker, Volkmar Gieselmann, Lihua Wang-Eckhardt, Matthias Eckhardt

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
0.8field-weighted citation impact, top 33% 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

16 citing papers in PubMed, 35 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Evidence of NAAG-family tripeptide NAAGJournal of neurochemistry · 2021
    Article
  9. Pediatric Dilated Cardiomyopathy-AssociatedJournal of the American Heart Association · 2018
    Article
  10. Review
  11. Article
  12. N-Acetylaspartate Synthase Deficiency Corrects the Myelin Phenotype in a Canavan Disease Mouse Model But Does Not Affect Survival Time.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015
    Article
  13. The pattern of cortical dysfunction in a mouse model of a schizophrenia-related microdeletion.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Article
  14. Article
  15. Article
  16. Review
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.

Julia Lodder-GadaczekInstitute of Biochemistry and Molecular Biology, University of Bonn, D-53115 Bonn, Germany.
Ivonne Becker
Volkmar Gieselmann
Lihua Wang-Eckhardt
Matthias Eckhardt
University of Bonn · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

N-Acetylaspartylglutamate (NAAG) is found at high concentrations in the vertebrate nervous system. NAAG is an agonist at group II metabotropic glutamate receptors. In addition to its role as a neuropeptide, a number of functions have been proposed for NAAG, including a role as a non-excitotoxic transport form of glutamate and a molecular water pump. We recently identified a NAAG synthetase (now renamed NAAG synthetase I, NAAGS-I), encoded by the ribosomal modification protein rimK-like family member B (Rimklb) gene, as a member of the ATP-grasp protein family. We show here that a structurally related protein, encoded by the ribosomal modification protein rimK-like family member A (Rimkla) gene, is another NAAG synthetase (NAAGS-II), which in addition, synthesizes the N-acetylated tripeptide N-acetylaspartylglutamylglutamate (NAAG(2)). In contrast, NAAG(2) synthetase activity was undetectable in cells expressing NAAGS-I. Furthermore, we demonstrate by mass spectrometry the presence of NAAG(2) in murine brain tissue and sciatic nerves. The highest concentrations of both, NAAG(2) and NAAG, were found in sciatic nerves, spinal cord, and the brain stem, in accordance with the expression level of NAAGS-II. To our knowledge the presence of NAAG(2) in the vertebrate nervous system has not been described before. The physiological role of NAAG(2), e.g. whether it acts as a neurotransmitter, remains to be determined.

Indexed as

Amino Acid SequenceAnimalsBrainCathepsin ACHO CellsCricetinaeCricetulusDipeptidesGlutamate Carboxypeptidase IIHumansMiceMolecular Sequence DataPlasmidsSciatic NerveSequence Homology, Amino AcidSpectrometry, Mass, Electrospray IonizationCathepsin ADipeptidesGlutamate Carboxypeptidase IIisospaglumic acid

Identifiers

PMID21454531
PMCPMC3089511
OpenAlexW2078051775

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.