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Related Concept Videos

Overview of DNA Repair02:25

Overview of DNA Repair

In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
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Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
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Spontaneous and Induced Mutations

Spontaneous mutations arise infrequently during DNA replication due to errors in the process. A key factor behind these errors is tautomeric shifts in nitrogenous bases, where bases transition from keto to enol forms or amino to imino forms. This shift can alter base-pairing rules, leading to mutations. Additionally, reactive oxygen species (ROS) arising from aerobic metabolism can damage DNA, resulting in depurination (loss of a purine base) or depyrimidination (loss of a pyrimidine base).
Noncovalent Attractions in Biomolecules02:35

Noncovalent Attractions in Biomolecules

Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
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Updated: Jun 3, 2026

DNA Origami-Mediated Substrate Nanopatterning of Inorganic Structures for Sensing Applications
08:59

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Published on: September 27, 2019

Chemical Environments Influence DNA Nanostructures: From Fundamental Interactions to Functional Applications.

Mo Xie1, Chao Zhang1, Lihao Liu1

  • 1Key Laboratory for Flexible Electronics (LoFE), Jiangsu Key Laboratory of Smart Biomaterials and Theranostic Technology, College of Materials Science and Engineering, College of Chemistry and Life Science, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu, P. R. China.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|June 1, 2026
PubMed
Summary

The chemical environment significantly impacts DNA nanostructures, affecting their assembly, stability, and function. Understanding these factors is key to designing advanced DNA nanotechnology for various applications.

Keywords:
DNA nanostructureschemical environmentpHself‐assemblystimuli‐responsive

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Area of Science:

  • Biochemistry
  • Materials Science
  • Nanotechnology

Background:

  • DNA nanostructures are programmable platforms for nanomedicine, biosensing, and molecular machinery.
  • Their properties are influenced by sequence but critically modulated by the chemical environment.

Purpose of the Study:

  • To systematically review how environmental factors influence DNA nanostructures.
  • To provide a framework for designing adaptive DNA nanomaterials.

Main Methods:

  • Review of fundamental DNA assembly principles.
  • Analysis of environmental factors: pH, cations, and additives.
  • Exploration of applications in nanodevices and biosensing.

Main Results:

  • Environmental factors like pH, cation identity, and additives significantly affect DNA nanostructure assembly, stability, and dynamics.
  • Environmental responsiveness can be harnessed for advanced DNA-based systems.

Conclusions:

  • A comprehensive understanding of chemical environment-mediated regulation is crucial for DNA nanotechnology.
  • This knowledge enables the rational design of functional and adaptive nanomaterials.