Objective
Cellular metabolites are essential components of life processes, and their import, biosynthesis, and enzymatic conversion are regulated by a wealth of pathways. The ubiquitin-proteasome system (UPS) plays a major role in ensuring that key metabolic regulators are maintained at proper levels, to control concentrations of ions, carbohydrates, amino acids, cofactors, and lipids. In particular, the activities and localization of critical ubiquitination enzymes (E3 ligases) and the proteasome must be tightly regulated to ensure that degradation is restricted to proteins that are unwanted, superfluous, or toxic, while sparing those proteins needed for ongoing metabolic functions. Nonetheless, we have limited knowledge of fundamental structural and cellular mechanisms underlying this regulation, and the extent of crosstalk between E3 ligases and metabolic signals. The main aim of this proposal is to decipher molecular principles underlying crosstalk between ubiquitination and metabolites at large. By using time-resolved cryo EM, single-molecule biophysics, cell-based mutagenesis screens and functional studies, we will provide insights into how E3 ligases regulate key mediators of glucose, ion, and lipid homeostasis (Aim 1). To further increase knowledge of the breadth and depth of crosstalk between metabolic pathways and the UPS, we will use our toolkit of E3 ligases and probes to define regulatory interactions between a wide swath of metabolites and E3 ligases, and to identify E3s activated upon switches in metabolic conditions (Aim 2). Moreover, we will explore how E3 ligases and proteasomes are reorganized at an ultrastructural level inside cells to respond to starvation or nutrient-rich conditions (Aim 3). Taken together, these interdisciplinary approaches will establish a framework to translate conceptual and technical advances across molecular, structural, cell biological and systems levels, to broadly illuminate coordination between metabolic signals and the UPS.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences biological sciences biochemistry biomolecules lipids
- natural sciences biological sciences biochemistry biomolecules carbohydrates
- natural sciences biological sciences biophysics
- medical and health sciences basic medicine physiology homeostasis
- natural sciences biological sciences biochemistry biomolecules proteins enzymes
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.1 - European Research Council (ERC)
MAIN PROGRAMME
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2022-ADG
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
80539 MUNCHEN
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.