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Updated: Jun 5, 2026
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In Vitro Ubiquitination and Deubiquitination Assays of Nucleosomal Histones
Published on: July 25, 2019
Water evaporation and conformational changes from partially solvated ubiquitin
Saravana Prakash Thirumuruganandham1, Herbert M Urbassek
1Fachbereich Physik und Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, Erwin-Schrödinger-Straße, 67663 Kaiserslautern, Germany.
Biochemistry Research International
|December 29, 2010
Summary
Water evaporation from partially solvated ubiquitin causes cooling and structural changes. Ubiquitin shrinks, exposing more hydrophilic surface area as its hydration shell decreases.
Area of Science:
- Biophysics
- Computational Chemistry
Background:
- Understanding protein behavior in varying hydration levels is crucial for biological processes.
- Evaporation of water from biomolecules influences their stability and function.
Purpose of the Study:
- To investigate the dynamics of water molecule evaporation from partially solvated ubiquitin.
- To determine the cooling and conformation changes of ubiquitin during this process.
Main Methods:
- Molecular dynamics simulations were employed to model the evaporation process.
- The study analyzed ubiquitin at an initial temperature of 300 K.
Main Results:
- A cooling rate of approximately 3 K/ns was observed, decreasing with water temperature.
- Ubiquitin undergoes conformational changes, shrinking as the hydration shell diminishes.
- The shrinking protein exposes a greater hydrophilic surface area.
Conclusions:
- Water evaporation significantly impacts ubiquitin's structural integrity and surface properties.
- The findings provide insights into protein dehydration dynamics and their consequences.
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