Evidence map›Paper›PMID 25107339›Full record

ReviewPlasmid2014

Mechanisms of plasmid segregation: have multicopy plasmids been overlooked?

Samuel Million-Weaver, Manel Camps

Open access · greenAbstract readReview
In one paragraph

Review in Plasmid, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
5.5field-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

49 citing papers in PubMed, 102 citations in OpenAlex.

  1. Article
  2. Review
  3. Plasmids inClinical microbiology reviews · 2026
    Review
  4. Review
  5. Review
  6. Article
  7. Leveraging EngineeredACS synthetic biology · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
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

2 authors at 2 institutions in 1 country.

Samuel Million-WeaverDepartment of Microbiology, University of Washington, Box 357735, Seattle, WA 98195-77352, United States.
Manel CampsDepartment of Microbiology and Environmental Toxicology, University of California Santa Cruz, Santa Cruz, CA 95064, United States.
University of California, Santa Cruz · USUniversity of Washington · US

Funding

Creation of AlkB Mutants for Protection of Bone MarrowK08CA116429 · NCI · UNIVERSITY OF WASHINGTON · PI CAMPS, MANEL · 2006 to 2010
$657k
NCI NIH HHS CA116429-04NCI NIH HHS K08 CA116429
6 · The paper itself

Abstract

Plasmids are self-replicating pieces of DNA typically bearing non-essential genes. Given that plasmids represent a metabolic burden to the host, mechanisms ensuring plasmid transmission to daughter cells are critical for their stable maintenance in the population. Here we review these mechanisms, focusing on two active partition strategies common to low-copy plasmids: par systems type I and type II. Both involve three components: an adaptor protein, a motor protein, and a centromere, which is a sequence area in the plasmid that is recognized by the adaptor protein. The centromere-bound adaptor nucleates polymerization of the motor, leading to filament formation, which can pull plasmids apart (par I) or push them towards opposite poles of the cell (par II). No such active partition mechanisms are known to occur in high copy number plasmids. In this case, vertical transmission is generally considered stochastic, due to the random distribution of plasmids in the cytoplasm. We discuss conceptual and experimental lines of evidence questioning the random distribution model and posit the existence of a mechanism for segregation in high copy number plasmids that moves plasmids to cell poles to facilitate transmission to daughter cells. This mechanism would involve chromosomally-encoded proteins and the plasmid origin of replication. Modulation of this proposed mechanism of segregation could provide new ways to enhance plasmid stability in the context of recombinant gene expression, which is limiting for large-scale protein production and for bioremediation.

Indexed as

CentromereChromosome SegregationDNADNA ReplicationGene ExpressionGenetic LociModels, MolecularPlasmidsDNACytoskeletonDNA-bindingMotorsPartitionReplicationSegregation

Identifiers

PMID25107339
PMCPMC4163524
OpenAlexW2079816108

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.