Evidence map›Paper›PMID 19414593›Full record

ArticleMolecular and cellular biology2009

Casein kinase 1 delta regulates the pace of the mammalian circadian clock.

Jean-Pierre Etchegaray, Kazuhiko K Machida, Elizabeth Noton, Cara M Constance, Robert Dallmann, Marianne N Di Napoli, Jason P DeBruyne, Christopher M Lambert, Elizabeth A Yu, Steven M Reppert and 1 more

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 151 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
151citing papers in PubMed, 1 pooled it
4.7field-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

151 citing papers in PubMed, 1 synthesis or guideline pooled it, 229 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Circadian Behavioral and Bioluminescence Rhythms in theJournal of biological rhythms · 2026
    Article
  5. Review
  6. Review
  7. Article
  8. Post-Translational Modifications in Animal Circadian Clocks.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Review
  16. PERspectives on circadian cell biology.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  17. Review
  18. Review
  19. Article
  20. Review

91 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

11 authors at 2 institutions in 1 country.

Jean-Pierre EtchegarayDepartment of Neurobiology, LRB-723, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA 01605, USA.
Kazuhiko K Machida
Elizabeth Noton
Cara M Constance
Robert Dallmann
Marianne N Di Napoli
Jason P DeBruyne
Christopher M Lambert
Elizabeth A Yu
Steven M Reppert
David R Weaver
University of Massachusetts Chan Medical School · USCollege of the Holy Cross · US

Funding

PILOT AND FEASIBILITY PROGRAMP30DK032520 · NIDDK · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI CZECH, MICHAEL P · 1986 to 2010
$14.6M
Mechanisms of Circadian Rhythmicity in CLOCK-Deficient MiceR01NS056125 · NINDS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI WEAVER, DAVID RAYMOND · 2006 to 2017
$3.6M
Circadian Clock: Transcriptional ControlR01NS047141 · NINDS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI REPPERT, STEVEN M. · 2004 to 2008
$1.8M
Genetic Analysis of Circadian Oscillator HierarchyR21NS051458 · NINDS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI WEAVER, DAVID RAYMOND · 2005 to 2006
$407k
Identification of the circadian clock proteomeF32GM074277 · NIGMS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI DEBRUYNE, JASON P · 2004 to 2005
$97k
NIDDK NIH HHS DK32520NIDDK NIH HHS P30 DK032520NIGMS NIH HHS F32 GM074277NINDS NIH HHS R01 NS047141NINDS NIH HHS R01 NS056125NINDS NIH HHS R21 NS051458NINDS NIH HHS R21NS051458
6 · The paper itself

Abstract

Both casein kinase 1 delta (CK1delta) and epsilon (CK1epsilon) phosphorylate core clock proteins of the mammalian circadian oscillator. To assess the roles of CK1delta and CK1epsilon in the circadian clock mechanism, we generated mice in which the genes encoding these proteins (Csnk1d and Csnk1e, respectively) could be disrupted using the Cre-loxP system. Cre-mediated excision of the floxed exon 2 from Csnk1d led to in-frame splicing and production of a deletion mutant protein (CK1delta(Delta2)). This product is nonfunctional. Mice homozygous for the allele lacking exon 2 die in the perinatal period, so we generated mice with liver-specific disruption of CK1delta. In livers from these mice, daytime levels of nuclear PER proteins, and PER-CRY-CLOCK complexes were elevated. In vitro, the half-life of PER2 was increased by approximately 20%, and the period of PER2::luciferase bioluminescence rhythms was 2 h longer than in controls. Fibroblast cultures from CK1delta-deficient embryos also had long-period rhythms. In contrast, disruption of the gene encoding CK1epsilon did not alter these circadian endpoints. These results reveal important functional differences between CK1delta and CK1epsilon: CK1delta plays an unexpectedly important role in maintaining the 24-h circadian cycle length.

Indexed as

AnimalsBase SequenceCasein Kinase 1 epsilonCasein Kinase IdeltaCell Cycle ProteinsCells, CulturedCircadian RhythmCLOCK ProteinsCryptochromesDNA PrimersFemaleFibroblastsFlavoproteinsHalf-LifeLiverMaleCasein Kinase 1 epsilonCasein Kinase IdeltaCell Cycle ProteinsClock protein, mouseCLOCK ProteinsCryptochromesDNA PrimersFlavoproteinsNuclear ProteinsPer2 protein, mousePeriod Circadian ProteinsTrans-ActivatorsTranscription Factors

Identifiers

PMID19414593
PMCPMC2704743
OpenAlexW2124659015

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.