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Related Concept Videos

Solvents01:12

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A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
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In ordinary chemical reactions, the nucleus — which contains the protons and neutrons of each atom and thus identifies the element — remains unchanged. Electrons, however, can be added to atoms by transfer from other atoms, lost by transfer to other atoms, or shared with other atoms. The transfer and sharing of electrons among atoms govern the chemistry of the elements. During the formation of some compounds, atoms gain or lose electrons to form electrically charged particles called...
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Related Experiment Video

Updated: Feb 8, 2026

An Experimental and Finite Element Protocol to Investigate the Transport of Neutral and Charged Solutes across Articular Cartilage
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Charge transport in a DNA model with solvent interaction.

H Ngoubi1, G H Ben-Bolie2, T C Kofané3

  • 1Laboratory of Biophysics, Department of Physics, Faculty of Science, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon. henockngoubi@yahoo.fr.

Journal of Biological Physics
|July 5, 2018
PubMed
Summary

Solvent interactions influence charge transport in DNA, enabling robust, localized soliton-like waves for efficient information transfer. However, strong solvent effects can disrupt these patterns, hindering signal transmission.

Keywords:
Charge transportPeyrard–Bishop modelSolvent interaction

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Area of Science:

  • Biophysics
  • Computational Biology
  • Molecular Dynamics

Background:

  • Charge transport in DNA is crucial for biological processes.
  • Understanding DNA dynamics requires considering nucleotide coupling and solvent effects.
  • Nonlinear phenomena, like solitons, are proposed mechanisms for information transfer in DNA.

Purpose of the Study:

  • To investigate charge transport in a modified DNA model.
  • To analyze the impact of solvent interactions on charge migration.
  • To explore the generation and properties of soliton-like excitations in DNA.

Main Methods:

  • Continuum approximation to reduce DNA dynamics to coupled nonlinear equations.
  • Linear stability analysis of wave solutions.
  • Numerical simulations to study wave patterns and localized structures.
  • Investigating the influence of the solvent factor on charge transport.

Main Results:

  • Modulational instability of plane waves and generation of soliton-like excitations were observed.
  • Solvent interactions modify wave patterns and properties of localized structures.
  • Solitons exist with solvent effects, showing robust propagation.
  • High solvent factor values can cause localized structures to disappear, disrupting information transmission.

Conclusions:

  • Solvent effects play a significant role in DNA charge transport dynamics.
  • Soliton-like excitations are viable for efficient, localized information transfer in DNA.
  • The presence and strength of solvent interactions determine the robustness and perceptibility of information within DNA.