Cited by 1,003Neuroscience and Neuropharmacology ResearchGenetics and Neurodevelopmental DisordersReceptor Mechanisms and Signaling

The Postsynaptic Architecture of Excitatory Synapses: A More Quantitative View

Sheng, Morgan, Hoogenraad, Casper C.·2007·Annual Review of Biochemistry

Abstract

Excitatory (glutamatergic) synapses in the mammalian brain are usually situated on dendritic spines, a postsynaptic microcompartment that also harbors organelles involved in protein synthesis, membrane trafficking, and calcium metabolism. The postsynaptic membrane contains a high concentration of glutamate receptors, associated signaling proteins, and cytoskeletal elements, all assembled by a variety of scaffold proteins into an organized structure called the postsynaptic density (PSD). A complex machine made of hundreds of distinct proteins, the PSD dynamically changes its structure and composition during development and in response to synaptic activity. The molecular size of the PSD and the stoichiometry of many major constituents have been recently measured. The structures of some intact PSD proteins, as well as the spatial arrangement of several proteins within the PSD, have been determined at low resolution by electron microscopy. On the basis of such studies, a more quantitative and geometrically realistic view of PSD architecture is emerging.

Integrity signals

Registry

Crossref · 10.1146/annurev.biochem.76.060805.160029

Cites

154 of 154 references verified0 citation errors · 0 not checkable

Statistics

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

Claims the paper makes

This paper’s full text isn’t openly available, 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?

  • CaMKII is present in the brain at extraordinarily high levels, rivaling the levels of cytoskeletal proteins.

    “Second, it is present in the brain at extraordinarily high levels, rivaling the levels of cytoskeletal proteins (63–67), suggesting that CaMKII may play a structural role (27, 68).”

    From Synaptic memory and CaMKII (2023) · cites this paper as [66]

  • Given roughly 20-30 NMDARs in the PSD and ∼100 holoenzymes (∼1,200 CaMKII subunits), after NMDAR activation only a small fraction of subunits per holoenzyme would be directly bound to GluN2B.

    “since there are roughly 20–30 NMDARs in the PSD (66, 143) and ∼100 holoenzymes [∼1,200 CaMKII subunits (65)], after NMDAR activation only a small fraction of subunits per holoenzyme would be directly bound to GluN2B.”

    From Synaptic memory and CaMKII (2023) · cites this paper as [66]

  • Actin is largely excluded from the core of the PSD, interacting with proteins such as Shank and SAPAP in the pallium.

    “However, actin is largely excluded from the core of the PSD, interacting with such proteins as Shank and SAPAP located in the deeper, cytoplasmic-facing layer of the PSD referred to as the pallium (66, 162, 322).”

    From Synaptic memory and CaMKII (2023) · cites this paper as [66]

  • Although it is well established that CaMKII phosphorylates numerous synaptic proteins, an essential role for CaMKII phosphorylation of many of these targets largely remains elusive.

    “It should be pointed out that, although it is well established that CaMKII phosphorylates numerous synaptic proteins (66, 434–437), as reviewed here, despite intensive research an essential role for CaMKII phosphorylation of many of these targets largely remains elusive.”

    From Synaptic memory and CaMKII (2023) · cites this paper as [66]

  • Actin is largely excluded from the core of the PSD, and evidence suggests that, at least for the first hour, the changes in spine size are not accompanied by changes in the size of the PSD.

    “Actin is largely excluded from the core of the PSD (66, 322), and evidence suggests that, at least for the first hour, the changes in spine size are not accompanied by changes in the size of the PSD (56).”

    From Synaptic memory and CaMKII (2023) · cites this paper as [66]

Cites

Flagged first, then by citations

Research works printed but not linked: 3

  1. Gray EG, 1959, J. Anat., 93, 420
  2. Collins MO, 2005, J. Neurochem., 97, 16
  3. Tsuriel S, 2006, PLoS Biol., 15, 4(9)

Cited by

Sorted by citations

Authors
Sheng, M., & Hoogenraad, C. C.
Affiliations
  • Howard Hughes Medical Institute (US)
  • Erasmus MC (NL)
Venue
Annual Review of Biochemistry
Published
2007-06-07
Volume
76
Issue
1
Pages
823-847
ISSN
  • 0066-4154 (ISSN-L)
  • 1545-4509
OpenAlex
W2071318481
Cited by
1,003
References
154
Citations by year
2026: 27 · 2025: 37 · 2024: 32 · 2023: 42 · 2022: 41 · 2021: 51 · 2020: 64 · 2019: 58 · 2018: 52 · 2017: 39 · 2016: 58 · 2015: 42 · 2014: 62 · 2013: 68 · 2012: 65
FWCI
5.26
Type
journal article
Language
en
Open access
closed
Locations
  • Annual Review of Biochemistry (publishedVersion)
  • PubMed (publishedVersion)
  • EUR Research Repository (Erasmus University Rotterdam) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
Keywords
postsynaptic density, excitatory synapses, glutamatergic synapses, dendritic spines, synaptic structure, glutamate receptors, synaptic scaffolds, protein stoichiometry, postsynaptic membrane, synaptic plasticity, electron microscopy of synapses
MeSH terms
Animals, Brain, Cell Membrane, Models, Molecular, Nerve Tissue Proteins, Synapses, Receptors, Glutamate, Dendritic Spines

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