Evidence map›Paper›PMID 22327476›Full record

ArticleGenes & development2012

A role for O-GlcNAcylation in setting circadian clock speed.

Eun Young Kim, Eun Hee Jeong, Sujin Park, Hyun-Jeong Jeong, Isaac Edery, Jin Won Cho

Open access · diamondAbstract read
In one paragraph

Article in Genes & development, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 87 papers.

0numbers the graph read from it
0cells of the map it votes in
87citing 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

87 citing papers in PubMed, 124 citations in OpenAlex.

  1. Post-Translational Modifications in Animal Circadian Clocks.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
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  5. iScience · 2025
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  19. Role ofPhysiological reviews · 2021
    Review
  20. Review

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Eun Young KimNeuroscience Graduate Program, Institute for Medical Sciences, Ajou University School of Medicine, Wonchon-dong, Suwon, Kyunggi-do, Korea. ekim@ajou.ac.kr
Eun Hee Jeong
Sujin Park
Hyun-Jeong Jeong
Isaac Edery
Jin Won Cho
Ajou University · KRYonsei University · KRAdvanced Pharma · US

Funding

CLOCK MECHANISM UNDERLYING RHYTHMIC BEHAVIORR01NS034958 · NINDS · RUTGERS THE ST UNIV OF NJ NEW BRUNSWICK · PI EDERY, ISAAC · 1995 to 2016
$5.5M
Seasonal Adaptation of a Circadian ClockR01NS042088 · NINDS · RUTGERS THE ST UNIV OF NJ NEW BRUNSWICK · PI EDERY, ISAAC · 2001 to 2013
$3.9M
NINDS NIH HHS R01 NS034958NINDS NIH HHS R01 NS042088NINDS NIH HHS R01NS34958NINDS NIH HHS R01NS42088
6 · The paper itself

Abstract

Post-translational modifications of one or more central "clock" proteins, most notably time-of-day-dependent changes in phosphorylation, are critical for setting the pace of circadian (≅24 h) clocks. In animals, PERIOD (PER) proteins are the key state variable regulating circadian clock speed and undergo daily changes in abundance and cytoplasmic-nuclear distribution that are partly driven by a complex phosphorylation program. Here, we identify O-GlcNAcylation (O-GlcNAc) as a critical post-translational modification in circadian regulation that also contributes to setting clock speed. Knockdown or overexpression of Drosophila O-GlcNAc transferase (ogt) in clock cells either shortens or lengthens circadian behavioral rhythms, respectively. The Drosophila PERIOD protein (dPER) is a direct target of OGT and undergoes daily changes in O-GlcNAcylation, a modification that is mainly observed during the first half of the night, when dPER is predominantly located in the cytoplasm. Intriguingly, the timing of when dPER translocates from the cytoplasm to the nucleus is advanced or delayed in flies, wherein ogt expression is reduced or increased, respectively. Our results suggest that O-GlcNAcylation of dPER contributes to setting the correct pace of the clock by delaying the timing of dPER nuclear entry. In addition, OGT stabilizes dPER, suggesting that O-GlcNAcylation has multiple roles in circadian timing systems.

Indexed as

AcylationAnimalsCasein Kinase 1 epsilonCell LineCell NucleusCells, CulturedCircadian ClocksDrosophila melanogasterDrosophila ProteinsGene Expression Regulation, EnzymologicGene Knockdown TechniquesN-AcetylglucosaminyltransferasesNeuronsPeriod Circadian ProteinsRNA, MessengerCasein Kinase 1 epsilondco protein, DrosophilaDrosophila ProteinsN-AcetylglucosaminyltransferasesO-GlcNAc transferasePeriod Circadian ProteinsPER protein, DrosophilaRNA, Messenger

Identifiers

PMID22327476
PMCPMC3305986
OpenAlexW2129172597

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.