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Related Concept Videos

Labeling DNA Probes03:31

Labeling DNA Probes

DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Single-Strand DNA Binding Proteins01:03

Single-Strand DNA Binding Proteins

For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...
The DNA Helix01:07

The DNA Helix

Deoxyribonucleic acid, or DNA, is the genetic material responsible for passing traits from generation to generation in all organisms and most viruses. DNA is composed of two strands of nucleotides that wind around each other to form a spring-like structure called a double helix. However, the double helix is not perfectly symmetrical. Instead, there are regularly occurring grooves in the structure. The major groove occurs where the sugar-phosphate backbones are relatively far apart. This space...
The DNA Helix01:16

The DNA Helix

Overview
Sanger Sequencing01:57

Sanger Sequencing

DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...
Restriction Enzymes01:11

Restriction Enzymes

Restriction enzymes are bacterial enzymes used to cut DNA in a sequence-specific manner. To cleave DNA, they bind to specific palindromic sequences called restriction sites. Such palindromic DNA sequences or inverted repeats are commonly found in regions of functional significance, such as the origin of replication, gene operator sites, and regions containing transcription termination signals.
The host bacteria protect their own genomic DNA from these enzymes by methylating these sites. Some...

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Updated: Jun 17, 2026

DNAzyme 10-23 - Based Nanomachines for Nucleic Acid Recognition
07:16

DNAzyme 10-23 - Based Nanomachines for Nucleic Acid Recognition

Published on: February 9, 2024

Specific recognition of DNA by small molecules.

Y H Du1, J Huang, X C Weng

  • 1College of Chemical and Molecular, Sciences, Wuhan University, Hubei, Wuhan 430072, P. R. of China.

Current Medicinal Chemistry
|December 18, 2009
PubMed
Summary

Developing DNA-targeting drugs requires precise molecular recognition. This review explores DNA recognition models to minimize side effects and advance drug design for disease treatment.

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Area of Science:

  • Medicinal Chemistry
  • Molecular Biology
  • Pharmacology

Background:

  • DNA is a promising target for drug development, with existing drugs demonstrating clinical success.
  • Current DNA-targeting drugs often cause severe side effects due to a lack of specific molecular recognition.
  • Improving specificity in DNA-drug interactions is essential for sustainable development of novel therapeutics.

Purpose of the Study:

  • To review current strategies for achieving specific DNA recognition by small molecules.
  • To highlight various DNA recognition models relevant to drug design.
  • To identify compounds with potential as ideal DNA-targeting drugs.

Main Methods:

  • Literature review of DNA-drug interactions.
  • Analysis of different DNA recognition models (abasic, mismatch, bulge, sequence-specific, secondary structure).
  • Evaluation of compound potential based on recognition capabilities.

Main Results:

  • Several DNA recognition models are being explored for targeted drug development.
  • Specific recognition of DNA sites like abasic, mismatch, and bulge sites is a key focus.
  • Certain compounds demonstrate significant potential for specific DNA interaction.

Conclusions:

  • Specific DNA recognition is critical for developing safer and more effective DNA-targeting drugs.
  • Understanding diverse DNA recognition models aids in designing superior drug candidates.
  • Further research into identified compounds could lead to advanced therapeutic agents.