Evidence map›Paper›PMID 18477603›Full record

ArticleGenes & development2008

Dual KaiC-based oscillations constitute the circadian system of cyanobacteria.

Yohko Kitayama, Taeko Nishiwaki, Kazuki Terauchi, Takao Kondo

Open access · diamondAbstract 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 79 papers.

0numbers the graph read from it
0cells of the map it votes in
79citing 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

79 citing papers in PubMed, 130 citations in OpenAlex.

  1. The Phenotypic Landscape of a Circadian Clock.bioRxiv : the preprint server for biology · 2026
    Article
  2. Intrinsic period stability of the cyanobacterial circadian oscillator across in vitro and in vivo conditions.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Clocking out and letting go to unleash green biotech applications in a photosynthetic host.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  4. Review
  5. Light cues induce protective anticipation of environmental water loss in terrestrial bacteria.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  6. Article
  7. Chloroplastic RecA protein fromPhysiology and molecular biology of plants : an international journal of functional plant biology · 2022
    Article
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  11. Review
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  17. Dissipative structures in biological systems: bistability, oscillations, spatial patterns and waves.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2018
    Review
  18. Review
  19. Article
  20. Low temperature nullifies the circadian clock in cyanobacteria through Hopf bifurcation.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article

19 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 at 1 institution in 1 country.

Yohko KitayamaDivision of Biological Science, Graduate School of Science, Nagoya University and CREST, Japan Science and Technology Corporation, Furo-cho, Chikusa, Nagoya 464-8602, Japan.
Taeko Nishiwaki
Kazuki Terauchi
Takao Kondo
Nagoya University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In the cyanobacterium Synechococcus elongatus PCC 7942, the KaiA, KaiB, and KaiC proteins are essential for the generation of circadian rhythms. Both in vivo and in vitro, phosphorylation of KaiC is regulated positively by KaiA and negatively by KaiB and shows circadian rhythmicity. The autonomous circadian cycling of KaiC phosphorylation is thought to be the basic pacemaker of the circadian clock and to control genome-wide gene expression in cyanobacteria. In this study, we found that temperature-compensated circadian oscillations of gene expression persisted even when KaiC was arrested in the phosphorylated state due to kaiA overexpression. Moreover, two phosphorylation mutants showed transcriptional oscillation with a long period. In kaiA-overexpressing and phosphorylation-deficient strains, KaiC oscillated and transient overexpression of phosphorylation-deficient kaiC reset the phase of the rhythm. These results suggest that transcription- and translation-based oscillations in KaiC abundance are also important for circadian rhythm generation in cyanobacteria. Furthermore, at low temperature, cyanobacteria can show circadian rhythms only when both the KaiC phosphorylation cycle and the transcription and translation cycle are intact. Our findings indicate that multiple coupled oscillatory systems based on the biochemical properties of KaiC are important to maintain robust and precise circadian rhythms in cyanobacteria.

Indexed as

Bacterial ProteinsBiological ClocksCircadian RhythmCyanobacteriaGene Expression Regulation, BacterialGenes, BacterialPhosphorylationSynechococcusTranscription, GeneticBacterial Proteins

Identifiers

PMID18477603
PMCPMC2418587
OpenAlexW2153963942

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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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.