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Updated: Jul 5, 2026

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Site-Directed Mutagenesis for In Vitro and In Vivo Experiments Exemplified with RNA Interactions in Escherichia Coli
Published on: February 5, 2019
SORS: a universal one-round PCR-based method for site-directed mutagenesis.
Bao-Li Wang1, Jin-Xing Quan, Hui Liang
1Tianjin Medical University, Tianjin, 300070, People's Republic of China. blwang7212@yahoo.com.cn
Molecular Biotechnology
|April 17, 2008
Summary
We developed a novel SORS mutagenesis protocol for site-directed DNA mutation. This method is rapid, restriction-independent, and offers higher success rates for gene editing.
Area of Science:
- Molecular Biology
- Genetic Engineering
Background:
- Site-directed mutagenesis is crucial for understanding gene function.
- Existing methods can be time-consuming and have limitations.
Purpose of the Study:
- To introduce a novel, efficient protocol for site-directed mutagenesis of double-stranded DNA.
- To demonstrate the versatility of the protocol for various mutation types.
Main Methods:
- Developed the sequential procedure of segmentation-overhang creating PCR-reannealing-splicing (SORS) mutagenesis.
- PCR-amplified DNA into two segments at the mutation site.
- Designed primers to create complementary overhangs for re-splicing.
Main Results:
- Successfully performed nucleotide substitutions, deletions, and insertions using SORS mutagenesis.
- The protocol is rapid and restriction-independent.
- Achieved higher success rates and reduced second-site mutations compared to previous methods.
Conclusions:
- SORS mutagenesis provides an efficient and reliable method for site-directed DNA modification.
- This technique simplifies gene editing and mutation introduction.
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In vitro Mutagenesis
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
In-vitro Mutagenesis
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.

