Evidence map›Paper›PMID 19638347›Full record

ArticleThe Journal of biological chemistry2009

Regulation of the proteasome by neuronal activity and calcium/calmodulin-dependent protein kinase II.

Stevan N Djakovic, Lindsay A Schwarz, Barbara Barylko, George N DeMartino, Gentry N Patrick

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 138 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
138citing papers in PubMed, 1 pooled it
4.8field-weighted citation impact, top 4% 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

138 citing papers in PubMed, 1 synthesis or guideline pooled it, 235 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. ESCRT-0 regulates AMPA receptor currents and CabioRxiv : the preprint server for biology · 2026
    Article
  4. ACS chemical neuroscience · 2026
    Article
  5. Degradation of CaMKII is stimulated by its active conformation.The Journal of biological chemistry · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Presynaptic neurons self-tune by inversely coupling neurotransmitter release with the abundance of CaV2 voltage-gated CaProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Review
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78 more citing papers are in PubMed but not listed here.

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 2 institutions in 1 country.

Stevan N DjakovicSection of Neurobiology, Division of Biological Sciences, University of California, San Diego, La Jolla, California 92093-0347, USA.
Lindsay A Schwarz
Barbara Barylko
George N DeMartino
Gentry N Patrick
University of California, San Diego · USThe University of Texas Southwestern Medical Center · US

Funding

FUNCTION AND REGULATION OF THE PROTEASOMER01DK046181 · NIDDK · UT SOUTHWESTERN MEDICAL CENTER · PI DEMARTINO, GEORGE N. · 1994 to 2012
$3.2M
Regulatory mechanisms of proteasome function in neuronsR21NS054732 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI PATRICK, GENTRY N · 2009 to 2010
$409k
Function and regulation of the proteasomeR56DK046181 · NIDDK · UT SOUTHWESTERN MEDICAL CENTER · PI DEMARTINO, GEORGE N. · 2007 to 2007
$353k
NIDDK NIH HHS DK46181NIDDK NIH HHS R01 DK046181NIDDK NIH HHS R56 DK046181NINDS NIH HHS NS054732NINDS NIH HHS R21 NS054732
6 · The paper itself

Abstract

Protein degradation via the ubiquitin proteasome system has been shown to regulate changes in synaptic strength that underlie multiple forms of synaptic plasticity. It is plausible, therefore, that the ubiquitin proteasome system is itself regulated by synaptic activity. By utilizing live-cell imaging strategies we report the rapid and dynamic regulation of the proteasome in hippocampal neurons by synaptic activity. We find that the blockade of action potentials (APs) with tetrodotoxin inhibited the activity of the proteasome, whereas the up-regulation of APs with bicuculline dramatically increased the activity of the proteasome. In addition, the regulation of the proteasome is dependent upon external calcium entry in part through N-methyl-D-aspartate receptors and L-type voltage-gated calcium channels and requires the activity of calcium/calmodulin-dependent protein kinase II (CaMKII). Using in vitro and in vivo assays we find that CaMKII stimulates proteasome activity and directly phosphorylates Rpt6, a subunit of the 19 S (PA700) subcomplex of the 26 S proteasome. Our data provide a novel mechanism whereby CaMKII may regulate the proteasome in neurons to facilitate remodeling of synaptic connections through protein degradation.

Indexed as

Action PotentialsAnimalsCalciumCalcium-Calmodulin-Dependent Protein Kinase Type 2Cell LineCells, CulturedDendritesGreen Fluorescent ProteinsHippocampusHumansImmunoprecipitationMicroscopy, ConfocalMutationNeuronsPhosphorylationProteasome Endopeptidase ComplexCalciumCalcium-Calmodulin-Dependent Protein Kinase Type 2Green Fluorescent ProteinsProteasome Endopeptidase ComplexSodium Channel BlockersTetrodotoxinUbiquitin

Identifiers

PMID19638347
PMCPMC2785353
OpenAlexW2047537735

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.