Cited by 89Neuroscience and Neuropharmacology ResearchAmino Acid Enzymes and MetabolismReceptor Mechanisms and Signaling

Subunit-specific role for the amino-terminal domain of AMPA receptors in synaptic targeting

Open access
Díaz-Alonso, Javier, Sun, Yujiao J., Granger, Adam J., Levy, Jonathan M., Blankenship, Sabine M., Nicoll, Roger A.·2017·Proceedings of the National Academy of Sciences

Abstract

The amino-terminal domain (ATD) of AMPA receptors (AMPARs) accounts for approximately 50% of the protein, yet its functional role, if any, remains a mystery. We have discovered that the translocation of surface GluA1, but not GluA2, AMPAR subunits to the synapse requires the ATD. GluA1A2 heteromers in which the ATD of GluA1 is absent fail to translocate, establishing a critical role of the ATD of GluA1. Inserting GFP into the ATD interferes with the constitutive synaptic trafficking of GluA1, but not GluA2, mimicking the deletion of the ATD. Remarkably, long-term potentiation (LTP) can override the masking effect of the GFP tag. GluA1, but not GluA2, lacking the ATD fails to show LTP. These findings uncover a role for the ATD in subunit-specific synaptic trafficking of AMPARs, both constitutively and during plasticity. How LTP, induced postsynaptically, engages these extracellular trafficking motifs and what specific cleft proteins participate in the process remain to be elucidated.

Integrity signals

Registry

Crossref · 10.1073/pnas.1707472114

Cites

40 of 40 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Tagging GluA1 on the NH2 terminus severely impacts the trafficking of the GluA1-containing receptor.

    “Third, most of these studies have tagged GluA1 on the NH2 terminus. This tagging severely impacts the trafficking of the GluA1-containing receptor (343, 344).”

    From Synaptic memory and CaMKII (2023) · cites this paper as [344]

  • The amino terminal domain is not necessary for formation of functional ion channels, or delivery onto the cell surface, but is required for targeting and retention of GluA1 at synapses during LTP.

    “Data show that the amino terminal domain is not necessary for the formation of functional ion channels, or delivery onto the cell surface, but is required for targeting and retention of GluA1 at synapses during LTP (Watson et al., 2017, Diaz-Alonso et al., 2017).”

    From The AMPA Receptor Code of Synaptic Plasticity (2018) · cites this paper as Diaz-Alonso et al., 2017

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Díaz-Alonso, J., Sun, Y. J., Granger, A. J., Levy, J. M., Blankenship, S. M., & Nicoll, R. A.
Affiliations
University of California, San Francisco (US)
Venue
Proceedings of the National Academy of Sciences
Published
2017-06-19
Volume
114
Issue
27
Pages
7136-7141
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2693601175
Cited by
89
References
40
Citations by year
2026: 9 · 2025: 10 · 2024: 10 · 2023: 9 · 2022: 5 · 2021: 12 · 2020: 9 · 2019: 10 · 2018: 13 · 2017: 2
FWCI
4.55
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
HHS | NIH | National Institute of Mental Health (R01MH080379, R01MH070957)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
Keywords
AMPA receptors, N-terminal domain, GluR1, GluA2, synaptic targeting, receptor trafficking, long-term potentiation, synaptic plasticity, GFP tagging
MeSH terms
Protein Domains, Animals, Brain, Cytoplasm, Female, Hippocampus, Synaptic Transmission, Neurons, Synapses, Long-Term Potentiation, Receptors, AMPA, Electroporation, Excitatory Postsynaptic Potentials, Protein Isoforms, Amino Acid Motifs, Green Fluorescent Proteins, Mice, Rats, Protein Multimerization

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review