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Related Concept Videos

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One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
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Related Experiment Video

Updated: Apr 29, 2026

Functional Surface-immobilization of Genes Using Multistep Strand Displacement Lithography
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Error removal in microchip-synthesized DNA using immobilized MutS.

Wen Wan1, Lulu Li1, Qianqian Xu1

  • 1School of Life Science, University of Science and Technology of China, Hefei, Anhui, People's Republic of China Hefei National Laboratory for Physical Science at the Microscale, Hefei, Anhui, People's Republic of China.

Nucleic Acids Research
|May 16, 2014
PubMed
Summary

This study introduces a cost-effective MutS-immobilized cellulose column (MICC) method to remove errors from synthetic DNA. This significantly improves the accuracy of de novo gene synthesis, making gene assembly more reliable and efficient.

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Area of Science:

  • Molecular Biology
  • Biotechnology
  • Synthetic Biology

Background:

  • De novo gene synthesis is crucial for synthetic biology.
  • High error rates in microchip-synthesized oligonucleotides limit its application.
  • Existing error-correction methods are often costly and inefficient.

Purpose of the Study:

  • To develop a low-cost, high-throughput method for removing errors from synthetic DNA.
  • To improve the quality of DNA generated from oligonucleotides for gene assembly.
  • To enhance the efficiency and reliability of de novo gene synthesis.

Main Methods:

  • Utilized a MutS-immobilized cellulose column (MICC) for specific retention of error-containing DNA.
  • Developed a method for error removal from microchip-synthesized oligonucleotides.
  • Evaluated a multiplex MICC strategy for assembling multiple genes.

Main Results:

  • Improved synthetic enhanced green fluorescent protein gene clones from 0.93% to 83.22% accuracy.
  • Reduced synthetic gene error frequency from 11.44/kb to 0.46/kb.
  • Achieved a 21.59-fold reduction in error frequency for a 21 kb DNA assembly, increasing error-free fragments by 24.48-fold.

Conclusions:

  • The MICC method provides an effective and economical solution for error correction in synthetic DNA.
  • This technique significantly enhances the quality and yield of error-free DNA for gene synthesis and assembly.
  • The low cost ($0.374 per MICC) and speed (1.5 h) make MICC a practical tool for researchers.