Evidence map›Paper›PMID 18593878›Full record

ArticleGenes & development2008

The phospho-occupancy of an atypical SLIMB-binding site on PERIOD that is phosphorylated by DOUBLETIME controls the pace of the clock.

Joanna C Chiu, Jens T Vanselow, Achim Kramer, Isaac Edery

Abstract read
In one paragraph

Article in Genes & development, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 100 papers.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed
–field-weighted citation impact
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

100 citing papers in PubMed.

  1. eLife · 2026
    Article
  2. Oligomerization of PER2 as a dynamic mode of regulation of the mammalian circadian clock.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Review
  4. Post-Translational Modifications in Animal Circadian Clocks.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  5. iScience · 2025
    Article
  6. Review
  7. A Compensated Clock: Temperature and Nutritional Compensation Mechanisms Across Circadian Systems.BioEssays : news and reviews in molecular, cellular and developmental biology · 2025
    Review
  8. Article
  9. Review
  10. Alternative splicing ofProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  11. Article
  12. Alternative splicing ofbioRxiv : the preprint server for biology · 2024
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Ubiquitin proteasome system in circadian rhythm and sleep homeostasis: Lessons from Drosophila.Genes to cells : devoted to molecular & cellular mechanisms · 2022
    Review

40 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Joanna C ChiuRutgers University, Center for Advanced Biotechnology and Medicine, Piscataway, New Jersey 08854, USA.
Jens T Vanselow
Achim Kramer
Isaac Edery

Funding

CLOCK MECHANISM UNDERLYING RHYTHMIC BEHAVIORR01NS034958 · NINDS · RUTGERS THE ST UNIV OF NJ NEW BRUNSWICK · PI EDERY, ISAAC · 1995 to 2016
$5.5M
The role of clock protein phosphorylation and degradation in circadian biologyR00NS061952 · NINDS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI CHIU, JOANNA CHUNGYEN · 2010 to 2012
$732k
The role of clock protein phosphorylation and degradation in circadian biologyK99NS061952 · NINDS · RUTGERS, THE STATE UNIV OF N.J. · PI CHIU, JOANNA CHUNGYEN · 2008 to 2009
$176k
Role of PER phosphorylation in circadian biologyF32NS049862 · NINDS · RUTGERS THE ST UNIV OF NJ NEW BRUNSWICK · PI CHIU, JOANNA CHUNGYEN · 2005 to 2006
$93k
NINDS NIH HHS F32 NS049862NINDS NIH HHS K99 NS061952NINDS NIH HHS NS049862NINDS NIH HHS NS061952NINDS NIH HHS R00 NS061952NINDS NIH HHS R01 NS034958PHS HHS 34958
6 · The paper itself

Abstract

A common feature of animal circadian clocks is the progressive phosphorylation of PERIOD (PER) proteins, which is highly dependent on casein kinase Idelta/epsilon (CKIdelta/epsilon; termed DOUBLETIME [DBT] in Drosophila) and ultimately leads to the rapid degradation of hyperphosphorylated isoforms via a mechanism involving the F-box protein, beta-TrCP (SLIMB in Drosophila). Here we use the Drosophila melanogaster model system, and show that a key step in controlling the speed of the clock is phosphorylation of an N-terminal Ser (S47) by DBT, which collaborates with other nearby phosphorylated residues to generate a high-affinity atypical SLIMB-binding site on PER. DBT-dependent increases in the phospho-occupancy of S47 are temporally gated, dependent on the centrally located DBT docking site on PER and partially counterbalanced by protein phosphatase activity. We propose that the gradual DBT-mediated phosphorylation of a nonconsensus SLIMB-binding site establishes a temporal threshold for when in a daily cycle the majority of PER proteins are tagged for rapid degradation. Surprisingly, most of the hyperphosphorylation is unrelated to direct effects on PER stability. We also use mass spectrometry to map phosphorylation sites on PER, leading to the identification of a number of "phospho-clusters" that explain several of the classic per mutants.

Indexed as

AnimalsBinding SitesCasein Kinase 1 epsilonCell Cycle ProteinsCells, CulturedCircadian RhythmDrosophila melanogasterDrosophila ProteinsMass SpectrometryMutationNuclear ProteinsPeriod Circadian ProteinsPhosphorylationUbiquitin-Protein LigasesCasein Kinase 1 epsilonCell Cycle Proteinsdco protein, DrosophilaDrosophila ProteinsNuclear ProteinsPeriod Circadian ProteinsPER protein, Drosophilaslmb protein, DrosophilaUbiquitin-Protein Ligases

Identifiers

PMID18593878
PMCPMC2492663

What OpenQuestion holds

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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.