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blue-light-controllable DNA region-specific semi-random mutagenesis system

Candidate: toolkit itemType: multi component switch1 source documents5 linked claims
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Extracted Explainers

What the tool is doing

This system enables blue-light-inducible semi-random mutagenesis on a defined exogenous DNA region in E. coli. The abstract states that it mutates cytosine to thymine on DNA between the T7 promoter and T7 terminator.

Source 1DOIPubMed

Resources required

The method requires a cytosine base editor, p-Mag/n-Mag blue-light-inducible elements, split T7 RNA polymerase, blue-light illumination, and a target gene arranged downstream of a T7 promoter and within a T7-terminated region.

Source 1DOIPubMed

What problem it solves

It addresses the problem that many mutagenesis methods cause uncontrollable random genomic mutations with potentially deforming or lethal effects. The system instead focuses mutagenesis on a specified exogenous DNA region with light control.

Source 1DOIPubMed

What it does not solve

The abstract does not support genome-wide programmable editing or mutation types beyond cytosine-to-thymine conversion. It also does not establish performance outside the defined T7 promoter-to-terminator region.

Source 1DOIPubMed

Alternatives

The abstract contrasts this approach with methods that induce random genomic DNA mutations. No specific alternative tool names are given in the paper abstract itself.

Source 1DOIPubMed

Evidence Snippets

this outlined method incorporates a blue-light-controllable, DNA region-specific, semi-random mutagenesis system
Evidence 1Source 1DOIPubMedprovenance

Supporting Sources

Linked Claims

Claim 1application potentialsupports2025Source 1DOIPubMed

The system can be adapted to an in vivo evolution system in which gene function is selected and desired mutations are collected.

Quoted textsource-backed
The system can be adapted to an in vivo evolution system where the function of the gene of interest can be selected, and the desired mutations can be collected for further study.
Claim 2mechanismsupports2025Source 1DOIPubMed

Blue light induces assembly of the two engineered parts into a mutation generator, whereas without blue light p-Mag detaches from n-Mag and releases the CBE from editing DNA.

Quoted textsource-backed
Under blue light, these two parts were assembled to function as a mutation generator on DNAs between the T7 promoter and the T7 terminator. Without blue light, p-Mag is detached from n-Mag, releasing the CBE from editing the DNA.
Claim 3mechanismsupports2025Source 1DOIPubMed

The system mutates cytosine to thymine on DNA between the T7 promoter and the T7 terminator.

Quoted textsource-backed
This system can mutate cytosine to thymine on DNAs starting from the T7 promoter and ending in the T7 terminator.
Claim 4target scopesupports2025Source 1DOIPubMed

Any exogenous gene downstream of the T7 promoter can potentially be mutated by the system.

Quoted textsource-backed
Any exogenous gene downstream of the T7 promoter can be potentially mutated.
Claim 5tool capabilitysupports2025Source 1DOIPubMed

The described system is a blue-light-controllable, DNA region-specific, semi-random mutagenesis system in Escherichia coli.

Quoted textsource-backed
this outlined method incorporates a blue-light-controllable, DNA region-specific, semi-random mutagenesis system