Evidence map›Paper›PMID 21683595›Full record

ArticleCurrent biology : CB2011

Modularity of the bacterial cell cycle enables independent spatial and temporal control of DNA replication.

Kristina Jonas, Y Erin Chen, Michael T Laub

Abstract read
In one paragraph

Article in Current biology : CB, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing 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

46 citing papers in PubMed.

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  19. Multilayered control of chromosome replication inBiochemical Society transactions · 2019
    Review
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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

3 authors.

Kristina JonasDepartment of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Y Erin Chen
Michael T Laub

Funding

Medical Scientist Training ProgramT32GM007753 · NIGMS · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI WALENSKY, LOREN DAVID · 1985 to 2021
$50.0M
Cell Cycle Regulation in Caulobacter CrescentusR01GM082899 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI LAUB, MICHAEL · 2008 to 2020
$3.8M
Howard Hughes Medical InstituteNIGMS NIH HHS 5R01GM082899NIGMS NIH HHS R01 GM082899NIGMS NIH HHS T32 GM007753
6 · The paper itself

Abstract

backgroundComplex regulatory circuits in biology are often built of simpler subcircuits or modules. In most cases, the functional consequences and evolutionary origins of modularity remain poorly defined.

resultsHere, by combining single-cell microscopy with genetic approaches, we demonstrate that two separable modules independently govern the temporal and spatial control of DNA replication in the asymmetrically dividing bacterium Caulobacter crescentus. DNA replication control involves DnaA, which promotes initiation, and CtrA, which silences initiation. We show that oscillations in DnaA activity dictate the periodicity of replication while CtrA governs the asymmetric replicative fates of daughter cells. Importantly, we demonstrate that DnaA activity oscillates independently of CtrA.

conclusionsThe genetic separability of spatial and temporal control modules in Caulobacter reflects their evolutionary history. DnaA is the central component of an ancient and phylogenetically widespread circuit that governs replication periodicity in Caulobacter and most other bacteria. By contrast, CtrA, which is found only in the asymmetrically dividing α-proteobacteria, was integrated later in evolution to enforce replicative asymmetry on daughter cells.

Indexed as

DNA ReplicationBacterial ProteinsBiological EvolutionCaulobacter crescentusCell CycleDNA-Binding ProteinsPeriodicityTranscription FactorsBacterial ProteinsCtrA protein, CaulobacterDnaA protein, BacteriaDNA-Binding ProteinsTranscription Factors

Identifiers

PMID21683595
PMCPMC3143580

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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.