Biomolecules under Pressure: Phase Diagrams, Volume Changes, and High Pressure Spectroscopic Techniques

Area of Science:

• Biophysics
• Biochemistry
• Thermodynamics

Background:

• Pressure is a critical thermodynamic parameter often overlooked in biomolecular studies.
• High pressure environments exist naturally in the deep sea, a significant part of the biosphere.

Purpose of the Study:

• To review the application of high pressure (>100 MPa) in biological research.
• To highlight the unique insights into volumetric properties of biological systems provided by pressure studies.
• To explore pressure's effects on biomolecules and supramolecular structures.

Main Methods:

• Review of thermodynamic principles of pressure science.
• Discussion of high-pressure generation techniques.
• Overview of high-pressure-compatible spectroscopic methods (e.g., for conformational changes, flexibility).

Main Results:

• High pressure provides unique volumetric data for biological systems.
• Spectroscopic techniques under pressure reveal biomolecular dynamics and conformational changes.
• Pressure affects lipids, proteins, nucleic acids, viruses, and bacteria.

Conclusions:

• High pressure is a powerful tool in bioscience, complementing temperature studies.
• Pressure treatment offers potential as an alternative to heat treatment in food science.
• Further research in high-pressure bioscience holds significant promise.