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In silico modeling of multi-domain proteins in biological condensates

Project description

Modelling and simulations of condensate formation in neurodegenerative diseases

Insoluble biomolecular condensates composed of nucleic acids and multi-domain proteins with both folded and disordered domains are a hallmark of many progressive neurodegenerative disorders and diseases. Their formation is highly dependent on local conditions such as pH and temperature and on local environmental constituents such as other biopolymers. With the support of the Marie Skłodowska-Curie Actions programme, the MMultiDP project aims to develop the first quantitative computational model that enables scanning a large chemical space and temperature space. It will be used to study the formation of condensates in amyotrophic lateral sclerosis, frontotemporal dementia and autism spectrum disorder via large-scale molecular dynamics simulations.

Objective

Neurodegenerative disorders are one of the leading causes of disabilities and death in elderly populations worldwide. To this date, no established treatment can either prevent or slow down the progression of these diseases. Their occurrences and progression are strongly correlated with insoluble biological condensates composed of nucleic acids and proteins, where the latter are multi-domain proteins with both folded and disordered domains. The formation and the existence of biological condensates can be described through a combination of density (e.g. liquid-liquid phase separation) and network (percolation) transitions. These phase transitions are highly context-dependent (pH, temperature, etc.) and composition-dependent, i.e. the presence of other biopolymers, where these system variations can either enhance or suppress transitions or have a profound effect on the material properties of condensates formed. Currently, we lack computational approaches that can account for such system variations and predict the phase behavior of biological condensates. In this project, I will develop for the first time a quantitative computational model that will enable scanning a large chemical space, as well as, be temperature-sensitive. Next, I will use this model to identify the role of folded and disordered domains in the formation of condensates for two protein families related to amyotrophic lateral sclerosis, frontotemporal dementia, and autism spectrum disorder through large-scale molecular dynamics simulations. Lastly, I will deliver a microscopic understanding of how certain system variations are linked to neurodegenerative diseases, e.g. pH, the presence of other biopolymers, and changes in protein sequence affect the properties of biological condensates. I will carry out this project in the research group of Prof. Kresten Lindorff-Larsen at the University of Copenhagen (UCPH).

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Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2023-PF-01

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Coordinator

KOBENHAVNS UNIVERSITET
Net EU contribution
€ 230 774,40
Address
NORREGADE 10
1165 KOBENHAVN
Denmark
Region
Danmark Hovedstaden Byen København
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data