Evidence map›Paper›PMID 19487695›Full record

ArticleThe Journal of biological chemistry2009

An endoplasmic reticulum retention signal located in the extracellular amino-terminal domain of the NR2A subunit of N-Methyl-D-aspartate receptors.

Shuang Qiu, Xiao-min Zhang, Jing-yuan Cao, Wei Yang, Ying-gang Yan, Ling Shan, Jie Zheng, Jian-hong Luo

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
2.0field-weighted citation impact, top 16% 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

36 citing papers in PubMed, 52 citations in OpenAlex.

  1. Distinct Regulation of Early Trafficking of the NMDA Receptors by the Ligand-Binding Domains of the GluN1 and GluN2A Subunits.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  2. Article
  3. Protein quality control ofFrontiers in cellular neuroscience · 2022
    Review
  4. Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Frontiers in molecular neuroscience · 2018
    Article
  11. Functions of intrinsic disorder in transmembrane proteins.Cellular and molecular life sciences : CMLS · 2017
    Review
  12. Review
  13. Review
  14. NMDA Receptors in the Central Nervous System.Methods in molecular biology (Clifton, N.J.) · 2017
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. ER to synapse trafficking of NMDA receptors.Frontiers in cellular neuroscience · 2014
    Review
  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 2 countries.

Shuang QiuDepartment of Neurobiology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China.
Xiao-min Zhang
Jing-yuan Cao
Wei Yang
Ying-gang Yan
Ling Shan
Jie Zheng
Jian-hong Luo
Zhejiang University · CNUniversity of California, Davis · US

Funding

THE ACTIVATION GATE OF CYCLIC NUCLEOTIDE-GATED CHANNELSR21EY016754 · NEI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI ZHENG, JIE · 2007 to 2008
$403k
NEI NIH HHS R21 EY016754PHS HHS REY016754A
6 · The paper itself

Abstract

N-Methyl-d-aspartate (NMDA) receptors play critical roles in complex brain functions as well as pathogenesis of neurodegenerative diseases. There are many NMDA isoforms and subunit types that, together with subtype-specific assembly, give rise to significant functional heterogeneity of NMDA receptors. Conventional NMDA receptors are obligatory heterotetramers composed of two glycine-binding NR1 subunits and two glutamate-binding NR2 subunits. When individually expressed in heterogeneous cells, most of the NR1 splice variants and the NR2 subunits remain in the endoplasmic reticulum (ER) and do not form homomeric channels. The mechanisms underlying NMDA receptor trafficking and functional expression remain uncertain. Using truncated and chimeric NMDA receptor subunits expressed in heterogeneous cells and hippocampal neurons, together with immunostaining, biochemical, and functional analyses, we found that the NR2A amino-terminal domain (ATD) contains an ER retention signal, which can be specifically masked by the NR1a ATD. Interestingly, no such signal was found in the ATD of the NR2B subunit. We further identified the A2 segment of the NR2A ATD to be the primary determinant of ER retention. These findings indicate that NR2A-containing NMDA receptors may undergo a different ER quality control process from NR2B-containing NMDA receptors.

Indexed as

Amino Acid SequenceAnimalsCell LineChlorocebus aethiopsCOS CellsEndoplasmic ReticulumGene ExpressionHippocampusHumansMolecular Sequence DataMutant Chimeric ProteinsNeuronsProtein Structure, TertiaryProtein TransportReceptors, N-Methyl-D-AspartateMutant Chimeric ProteinsNR2A NMDA receptorNR2B NMDA receptorReceptors, N-Methyl-D-Aspartate

Identifiers

PMID19487695
PMCPMC2740454
OpenAlexW2034297330

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.