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First-pass extracted concept

plasmid copy number

Candidate: concept label1 source documents4 linked claims
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Aliases

PCN

Extracted Explainers

What the tool is doing

Plasmid copy number is presented as a gene-dosage variable that shapes phenotypic mutation rate in engineered genetic modules. The abstract states that higher PCN facilitates emergence of gain-of-function mutations while curbing spread of loss-of-function mutations.

Source 1DOIPubMed

Resources required

The study examines PCN effects in plasmid-borne systems in Escherichia coli using computational modeling and in vivo mutagenesis experiments.

Source 1DOIPubMed

What problem it solves

It offers a tunable architectural parameter for designing circuits that are either more evolutionarily stable or more evolvable.

Source 1DOIPubMed

What it does not solve

The abstract does not support that PCN alone determines evolvability independent of regulatory architecture or mutation type.

Source 1DOIPubMed

Alternatives

The source contrasts PCN with regulatory architecture as another major determinant of phenotypic mutation rate.

Source 1DOIPubMed

Evidence Snippets

the interplay of gene dosage via plasmid copy number (PCN) and regulatory architecture affect the phenotypic mutation rate
Evidence 1Source 1DOIPubMedprovenance

Supporting Sources

Linked Claims

Claim 1directional effectsupports2025Source 1DOIPubMed

Greater plasmid copy number curbs the spread of loss-of-function mutations.

Quoted textsource-backed
it instead curbs the spread of loss-of-function mutations
Claim 2directional effectsupports2025Source 1DOIPubMed

Greater plasmid copy number facilitates the emergence of gain-of-function mutations.

Quoted textsource-backed
while greater PCN facilitates the emergence of gain-of-function mutations
Claim 3mechanistic relationshipsupports2025Source 1DOIPubMed

Plasmid copy number and regulatory architecture jointly affect phenotypic mutation rate in engineered genetic modules.

Quoted textsource-backed
we characterize how the interplay of gene dosage via plasmid copy number (PCN) and regulatory architecture affect the phenotypic mutation rate
Claim 4mechanistic relationshipsupports2025Source 1DOIPubMed

Regulatory-region mutations become more phenotypically prominent as plasmid copy number increases, including under constitutive regulator expression and self-repression.

Quoted textsource-backed
those occurring in the regulatory region which become more prominent as PCN increases, both when the regulator is expressed constitutively and when it is self-repressed