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The Central Dogma01:20

The Central Dogma

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The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
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MOSFET: Enhancement Mode01:22

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Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
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DNA-only Transposons02:57

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DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure.
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Related Experiment Video

Updated: Sep 16, 2025

Gene Digital Circuits Based on CRISPR-Cas Systems and Anti-CRISPR Proteins
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Gene Digital Circuits Based on CRISPR-Cas Systems and Anti-CRISPR Proteins

Published on: October 18, 2022

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Recent progress in stimuli-responsive DNA-based logic gates: Design, working principles and biological applications.

Ling Sum Liu1,2, Hoi Man Leung1, Yuzhen Cai1

  • 1Department of Chemistry and State Key Laboratory of Marine Pollution City University of Hong Kong Kowloon Tong Hong Kong SAR China.

Smart Molecules : Open Access
|July 8, 2025
PubMed
Summary

Stimuli-responsive DNA logic gates offer programmable computation for nanotechnology. These DNA-based gates are triggered by various inputs for applications in biosensing and molecular computing.

Keywords:
DNA logic gatesdrug deliveryimagingmolecular computationstimuli‐responsive

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Area of Science:

  • Synthetic biology
  • Nanotechnology
  • Molecular computing

Background:

  • DNA-based logic gates leverage DNA's properties for programmable computation.
  • These gates respond to specific stimuli, integrating biological and nanoscale systems.

Purpose of the Study:

  • To provide a comprehensive review of stimuli-responsive DNA-based logic gates.
  • To highlight advancements in design, working principles, and applications.

Main Methods:

  • Review of literature on DNA logic gates.
  • Categorization of gates based on stimuli (metal ions, pH, oligonucleotides, small molecules, proteins, light).
  • Analysis of applications in imaging, biosensing, drug delivery, synthetic biology, and molecular computing.

Main Results:

  • Progress in designing diverse DNA logic gates responsive to various stimuli.
  • Demonstrated applications in advanced biosensing, targeted drug delivery, and molecular computation.
  • Significant advancements in integrating these gates into complex biological systems.

Conclusions:

  • Stimuli-responsive DNA logic gates represent a significant advancement in nanotechnology.
  • Future prospects include enhanced molecular computing and sophisticated biosensing platforms.