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Updated: Oct 13, 2025

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Genetic Code Expansion Through Quadruplet Codon Decoding.

Jiantao Guo1, Wei Niu2

  • 1Department of Chemistry, University of Nebraska-Lincoln, United States; The Nebraska Center for Integrated Biomolecular Communication (NCIBC), University of Nebraska-Lincoln, Lincoln, Nebraska, 68588, United States.

Journal of Molecular Biology
|November 11, 2021
PubMed
Summary
This summary is machine-generated.

Quadruplet codons offer new ways to expand the genetic code for noncanonical amino acid mutagenesis. This review covers methods and applications for using these expanded codons in biological studies.

Keywords:
+1 frameshiftfour-base codongenetic codenon-canonical amino acidsquadruplet codon

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Synthetic Biology

Background:

  • Noncanonical amino acid mutagenesis is key for studying protein structure and function.
  • Triplet nonsense codons, like the amber codon, are commonly used for this purpose.

Purpose of the Study:

  • To review methodologies and applications of quadruplet codon decoding.
  • To highlight the potential of quadruplet codons for genetic code expansion.

Main Methods:

  • Discussing in vitro and in vivo techniques for quadruplet codon decoding.
  • Exploring strategies for implementing genetic code expansion using novel codons.

Main Results:

  • Quadruplet codons provide additional "blank" codons for incorporating noncanonical amino acids.
  • Successful in vitro and in vivo applications demonstrate their utility.

Conclusions:

  • Quadruplet codon decoding represents a significant advancement in genetic code expansion.
  • This technique broadens the scope of noncanonical amino acid mutagenesis for protein studies.