06/28/2024
As scientists continue to discover new niches for extreme life, the biological relevance of hydrostatic pressure is becoming much more widely understood and appreciated. The unusual adaptations of organisms thriving under these conditions promise to be a rich source of new insights, provided structural information can be obtained at the molecular level.
CHESS is at the forefront of this research. It enables scientists to study their samples under high pressure, revealing how biomolecules and cellular structures behave in extreme environments.
The deep sea encompasses more than 90% of Earth’s habitable volume, characterized by low temperatures and high pressures, with pressure increasing by about 1 bar per 10 meters depth. This extreme environment is home to unique organisms with remarkable adaptations.
“Comb jellies” (ctenophores), which inhabit diverse ocean environments, have become a powerful comparative system for studying deep-sea adaptation. Recent research led by Itay Budin at UC San Diego has shown that comb jellies adapt independently to various depths, exhibiting physiological responses consistent with pressure-specialization. Their work appears in Science.
High-Pressure Small Angle X-Ray Scattering (HPSAXS) at the HPBio Beamline in Sector 7 of CHESS allows scientists to probe structural signatures of pressure adaptation in deep-sea membranes. This technique has revealed that deep-sea lipids can change their structure in unique ways, even under high pressure, which helps them keep cell membranes stable and functional in extreme environments.
CHESS’s capabilities are essential for advancing our understanding of how organisms survive and thrive under extreme pressure. This knowledge not only deepens our appreciation of life’s resilience but also has potential applications in biotechnology and medicine.
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