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Entropy and Solvation02:05

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The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
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Solubility equilibria are established when the dissolution and precipitation of a solute species occur at equal rates. These equilibria underlie many natural and technological processes, ranging from tooth decay to water purification. An understanding of the factors affecting compound solubility is, therefore, essential to the effective management of these processes. This section applies previously introduced equilibrium concepts and tools to systems involving dissolution and precipitation.
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Updated: Apr 23, 2026

Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes
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Enzyme molecules in solitary confinement.

Raphaela B Liebherr1, Hans H Gorris2

  • 1Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Regensburg 93040, Germany.

Molecules (Basel, Switzerland)
|September 16, 2014
PubMed
Summary

Microwell arrays enable studying individual enzyme molecules in solution without surface immobilization. This technology allows for high-throughput kinetic analysis of enzyme populations, advancing single molecule enzymology.

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Area of Science:

  • Biochemistry
  • Nanotechnology
  • Analytical Chemistry

Background:

  • Enzyme kinetics are crucial for understanding biological processes.
  • Analyzing single enzyme molecules offers insights not possible with bulk assays.
  • Current methods often require surface immobilization, altering enzyme behavior.

Purpose of the Study:

  • To review microwell array formats for single enzyme molecule analysis.
  • To explore applications in enzyme detection and kinetic investigation.
  • To highlight recent advancements and future opportunities in the field.

Main Methods:

  • Utilizing large arrays of homogeneous microwells (femtoliter volumes).
  • Parallel monitoring of substrate turnover for individual enzyme molecules.
  • Enzymes remain free in solution, avoiding surface immobilization.

Main Results:

  • Microwell arrays provide a versatile platform for high-throughput single molecule enzymology.
  • Statistically representative enzyme populations can be analyzed.
  • Kinetic investigations of enzymes in their native solution state are enabled.

Conclusions:

  • Microwell arrays are a powerful tool for advancing single molecule enzymology.
  • Continued development in fabrication and detection methods will drive the field.
  • This approach offers significant opportunities for enzyme research and applications.