Exploring the structure and phase behavior of plasma membrane vesicles under extreme environmental conditions
文献情報
Janine Seeliger, Nelli Erwin, Christopher Rosin, Marie Kahse, Katrin Weise, Roland Winter
Not only drastic temperature- but also pressure-induced perturbations of membrane organization pose a serious challenge to the biological cell. Although high hydrostatic pressure significantly influences the structural properties and thus functional characteristics of cells, this has not prevented life from invading the high pressure habitats of marine depths where pressures up to the 100 MPa level are encountered. Here, the temperature- and pressure-dependent structure and phase behavior of giant plasma membrane vesicles have been explored in the absence and presence of membrane proteins using a combined spectroscopic and microscopic approach. Demixing into extended liquid-ordered and liquid-disordered domains is observed over a wide range of temperatures and pressures. Only at pressures beyond 200 MPa a physiologically unfavorable all gel-like ordered lipid phase is reached at ambient temperature. This is in fact the pressure range where the membrane–protein function has generally been observed to cease, thereby shedding new light on the possible origin of this observation.
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掲載誌
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.











![(4R,5S,6S)-3-({(3S,5S)-5-[(3-Carboxyphenyl)carbamoyl]-3-pyrrolidinyl}sulfanyl)-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid structure (4R,5S,6S)-3-({(3S,5S)-5-[(3-Carboxyphenyl)carbamoyl]-3-pyrrolidinyl}sulfanyl)-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid structure](https://static.chemtradehub.com/structs/153/153832-46-3-b2e0.webp)
![(1S,2R,4S)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol structure (1S,2R,4S)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol structure](https://static.chemtradehub.com/structs/464/464-45-9-f88b.webp)

