Spectroscopy and local interactions in condensates and organization of the cytoplasm (A3)

Objective

The goal of of A3 is to understand how local interactions of solvent and biomolecules drive phase separation and regulate condensate biochemistry

Project Description

Solvation water is fundamental to the structure and function of proteins and integral in coordinating biochemical reactions. Phase separation of intrinsically disordered proteins into two coexisting liquid phases is entropically unfavorable and creates compartments with a distinct solvent environment. The Adams group has developed spectroscopic methods to study the solvation of proteins and have shown that the global solvation is sensitive to molecular level changes in the protein sequence. Application of this technique to biomolecular condensates has provided insight into their solvent environment and the local water-protein interactions. Desolvation of specific molecular groups entropically drives phase transitions, while water inside of condensates is tightly bound to the proteins and has fewer degrees of freedom, resulting an environment with a stiff hydrogen bonding network.

A3 Biomolecular condensation is driven by desolvation of hydrophobic amino acid side chains

Research questions

How does physical chemistry of the solvent influence local interactions in condensates? How are molecular properties of condensates linked to their macroscopic properties? How do local mutations of proteins impact the condensate environment? What are the molecular properties of cytoplasm and how do solvent properties of the cytoplasm regulate spatiotemporal organization of condensates?

Thesis Project Topic

Local Hydration of Post Translationally Modified Condensate Proteins.

A3 - PTM effects on condensates

Training

The PhD students will be trained in various spectroscopic methods, microscopy, and physical chemistry concepts.

Profile of Prospective Students

  • Candidates have a Masters degree in chemistry, physics or related fields
  • Candidates should have a sound basis in physical chemistry, physics, biochemistry, or closely related fields.
  • Experience in spectroscopy is expected

Join Us!

We are currently recruiting the first cohort of motivated doctoral candidates to join our research training group “RTG 3120 Biomolecular Condensates”. If you are a potential applicant, register and complete the following form . If you have questions about the research topic, then email the project supervisor >

Explore other RTG Thesis Projects

Collaborations within the RTG

Click on the different project numbers (e.g. A1) to find out more about the theme of their ongoing collaborations and explore the project details

Collaborations within the RTG
A2 - Biomolecular condensate regulation (Harmon) A4 - Theory and simulation of polymer-assisted condensates (Sommer) B2 - Characterizing the role of RNP granules in ALS (Sterneckert) A1 - Role of surface condensation for the assembly of cortical proteins (Honigmann) A3 - Spectroscopy and local interactions in condensates and organization of the cytoplasm (Adams) A5 - Capillary forces and the force response of condensates (Jahnel and Grill) B1 - Elucidating the mechanisms underlying mRNA translation regulation by condensation (biophysics and biochemistry) (Alberti and Schlierf) B3 - Sequence to function mapping of condensate proteomes (Toth-Petroczy) B4 - Role of condensates in biological time across mammals (Ebisuya and Hyman) B5 - Role of condensates in epigenetics (experiments and theory) (Brugués and Schiessel)

A2 - Biomolecular condensate regulation (Harmon)

Project A2 Collaborations

A4 - Theory and simulation of polymer-assisted condensates (Sommer)

Project A4 Collaborations

B2 - Characterizing the role of RNP granules in ALS (Sterneckert)

Project B2 Collaborations

A1 - Role of surface condensation for the assembly of cortical proteins (Honigmann)

Project A1 Collaborations

A3 - Spectroscopy and local interactions in condensates and organization of the cytoplasm (Adams)

Project A3 Collaborations

A5 - Capillary forces and the force response of condensates (Jahnel and Grill)

Project A5 Collaborations

B1 - Elucidating the mechanisms underlying mRNA translation regulation by condensation (biophysics and biochemistry) (Alberti and Schlierf)

Project B1 Collaborations

B3 - Sequence to function mapping of condensate proteomes (Toth-Petroczy)

Project B3 Collaborations

B4 - Role of condensates in biological time across mammals (Ebisuya and Hyman)

Project B4 Collaborations

B5 - Role of condensates in epigenetics (experiments and theory) (Brugués and Schiessel)

Project B5 Collaborations