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Improving Translational Accuracy

Improving Translational Accuracy

Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...

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Updated: Sep 8, 2025

A Customizable Protocol for String Assembly gRNA Cloning STAgR

A Customizable Protocol for String Assembly gRNA Cloning STAgR

Published on: December 26, 2018

Aptamer-Array-Guided Protein Assembly Enhances Synthetic mRNA Switch Performance.

Qiuyu Lu¹, Yaxin Hu¹, Cheuk Yin Li¹

¹Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, Hong Kong.

Angewandte Chemie (International Ed. in English)

|June 15, 2022

Summary

This summary is machine-generated.

Synthetic messenger RNA (mRNA) switches were improved to reduce signal noise. This innovation enhances input sensitivity and output range for precise cell manipulation in biomedical applications.

Keywords:

Aptamer Array Readout Control Self-Assembly Synthetic Biology Synthetic mRNA Switch

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Area of Science:

Synthetic biology
Molecular engineering

Background:

Synthetic messenger RNA (mRNA) switches are vital tools for sensing cellular molecules and controlling cell fate.
High output signal noise from leaky protein expression limits the performance of current mRNA switches.

Purpose of the Study:

To design a novel readout control module to minimize signal noise in synthetic mRNA switches.
To enhance the input sensitivity and output range of mRNA switches for accurate cell manipulation.

Main Methods:

Development of a readout control module featuring an aptamer array.
Guiding inactive output protein self-assembly into functional signal-generating assemblies via the aptamer array.
Assessing signal generation from leaky protein expression versus saturated assembly.

Main Results:

Switches equipped with the readout control module demonstrated significantly reduced signal noise.
The enhanced switches exhibited improved input sensitivity and a broader output range.
The module effectively suppressed signal generation from leaky protein expression.

Conclusions:

The developed readout control module offers a new strategy for spatially guided protein self-assembly.
This advancement yields novel synthetic mRNA switches with reduced noise and enhanced performance.
These improved switches hold significant promise for accurate cell manipulation in biomedical applications.