Evidence map›Paper›PMID 21514639›Full record

ArticleCell2011

NEMO/NLK phosphorylates PERIOD to initiate a time-delay phosphorylation circuit that sets circadian clock speed.

Joanna C Chiu, Hyuk Wan Ko, Isaac Edery

Erratum issuedOpen access · bronzeAbstract read
In one paragraph

Article in Cell, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 109 papers.

0numbers the graph read from it
0cells of the map it votes in
109citing papers in PubMed
6.7field-weighted citation impact, top 2% 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

109 citing papers in PubMed, 181 citations in OpenAlex.

  1. 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
  2. Post-Translational Modifications in Animal Circadian Clocks.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  3. Review
  4. Review
  5. Review
  6. Article
  7. iScience · 2025
    Article
  8. Review
  9. A Compensated Clock: Temperature and Nutritional Compensation Mechanisms Across Circadian Systems.BioEssays : news and reviews in molecular, cellular and developmental biology · 2025
    Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Endogenous circadian reporters reveal functional differences ofProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  15. Article
  16. Article
  17. Casein kinase rolls the dice in clocks from bread mold to humans.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  18. Casein kinase 1 and disordered clock proteins form functionally equivalent, phospho-based circadian modules in fungi and mammals.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  19. Article
  20. Article

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

4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Joanna C ChiuDepartment of Molecular Biology and Biochemistry, Rutgers University, Center for Advanced Biotechnology and Medicine, Piscataway, NJ 08854, USA.
Hyuk Wan Ko
Isaac Edery
Rutgers, The State University of New Jersey · US

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
NINDS NIH HHS K99/R00NS061952NINDS NIH HHS R00 NS061952NINDS NIH HHS R01 NS034958NINDS NIH HHS R01NS03498
6 · The paper itself

Abstract

The speed of circadian clocks in animals is tightly linked to complex phosphorylation programs that drive daily cycles in the levels of PERIOD (PER) proteins. Using Drosophila, we identify a time-delay circuit based on hierarchical phosphorylation that controls the daily downswing in PER abundance. Phosphorylation by the NEMO/NLK kinase at the "per-short" domain on PER stimulates phosphorylation by DOUBLETIME (DBT/CK1δ/ɛ) at several nearby sites. This multisite phosphorylation operates in a spatially oriented and graded manner to delay progressive phosphorylation by DBT at other more distal sites on PER, including those required for recognition by the F box protein SLIMB/β-TrCP and proteasomal degradation. Highly phosphorylated PER has a more open structure, suggesting that progressive increases in global phosphorylation contribute to the timing mechanism by slowly increasing PER susceptibility to degradation. Our findings identify NEMO as a clock kinase and demonstrate that long-range interactions between functionally distinct phospho-clusters collaborate to set clock speed.

Indexed as

Circadian ClocksAmino Acid SequenceAnimalsAnimals, Genetically ModifiedCasein Kinase 1 epsilonCell Cycle ProteinsCell LineDrosophila melanogasterDrosophila ProteinsMitogen-Activated Protein KinasesMolecular Sequence DataPeriod Circadian ProteinsPhosphorylationUbiquitin-Protein LigasesCasein Kinase 1 epsilonCell Cycle Proteinsdco protein, DrosophilaDrosophila ProteinsMitogen-Activated Protein Kinasesnmo protein, DrosophilaPeriod Circadian ProteinsPER protein, Drosophilaslmb protein, DrosophilaUbiquitin-Protein Ligases

Identifiers

PMID21514639
PMCPMC3092788
OpenAlexW2027324767

What OpenQuestion holds

Textmetadata
LicenceTDM
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.