Research project Resolving non-equilibrium biomolecular transitions with coherent X-rays

Resolving and controlling the biomolecular condensation mechanism is essential for understanding cellular function, as well as for treating aggregation diseases and facilitate the formulation of future protein-based drugs and materials.
Icke-jämviktsbiomolekylära övergångar

The environment inside a cell is highly crowded, which can alter drastically the behaviour of macromolecular in solution. Such crowding effects can induce the formation of biomolecular condensates, which are liquid-like membrane-less droplets. Despite the general occurrence of biomolecular condensates, the physical mechanism governing the early stages of their formation is still debated.

The proposed research aims to provide new exciting experimental insights towards a general framework that predicts and explains the phase behavior of macromolecules. The project's timing is ideal as it utilizes diffraction-limited storage rings (DLSRs) and X-ray free electron lasers (XFELs), which are supported by the Swedish Research Council. The strength of the proposed coherent X-ray techniques is that they allow to capture non-equilibrium structural dynamics at unprecedented resolution, reaching protein molecular level sensitivity and sub-microsecond timescales. The proposed investigations not only train new scientists but also contribute to Sweden's long-term competitiveness in X-ray science.

Department of Physics

Unlocking Cryoprotection: The Role of Glycerol in Supercooled Water

Researchers uncover how glycerol, a common cryoprotectant, manipulates water's behavior at extremely low temperatures to prevent ice formation. The study, published in Nature Communications, provides a deeper understanding of the complex interplay between glycerol and water, with profound implications for cryopreservation – the science of preserving biological materials at ultra-low temperatures. This is an international research effort, led by Stockholm University (SU), in collaboration with Pohang University of Science and Technology (Republic of Korea), RIKEN SPring-8 Center (Japan) and Brooklyn College of the City University of New York (USA).

Department of Physics

Understanding proteins and water with physics

Anita Girelli is a new fellow in the Marie Skłodowska-Curie Actions program from the European Commission in 2024. Originally from Verona in Italy, Anita came to Fysikum in 2022 to start her first postdoc with Foivos Perakis. The way from Italy to Sweden was not always straight forward. For one, Anita took some time to fall in love with physics— I always liked math but at my first contact with physics, I thought it was weird and boring.

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