Objective
Multiple ribosomes simultaneously move along the mRNAs to translate the genes into proteins. Cellular stress triggers collisions of ribosomes and disrupts protein synthesis. Eukaryotes have evolved multi-tiered quality control mechanisms that monitor ribosomes and rescue them on collision. While much is known about the rescue of cytosolic ribosomes, how the cell rescues stalled endoplasmic reticulum bound (ER-bound) ribosomes remains unknown. We recently discovered that the stalling of ER-bound ribosomes induces autophagy, a major cellular degradation pathway. We discovered two autophagy receptors that are induced upon stalling of ER-bound ribosomes and these proteins are conserved between plants and humans. We also showed that ufmylation, an elusive posttranslational modification system regulates ER-bound ribosome stalling-induced autophagy. These two discoveries indicate that autophagy plays a major role in the maintenance of a functional ER-bound ribosome population. Based on these discoveries, I hypothesize that autophagy rescues stalled ER-bound ribosomes by selectively degrading harmful polypeptides and RNAs that clog the ribosomes during collisions. Here, I propose to define and characterize this conserved quality control mechanism. I will establish a suite of complementary methods in the model plants Arabidopsis thaliana and Marchantia polymorpha to explore the physiological significance of autophagy-mediated ribosomal rescue (RiboRescuePhagy) in complex multicellular organisms. In parallel, I will carry out unbiased genetic screens in human cell lines to discover the molecular components that mediate RiboRescuePhagy. Finally, I will perform structure-function analysis of a key ufmylation enzyme to untangle the connection between ufmylation and autophagy. At the completion of this project, we will have defined a new quality control mechanism that rescues stalled ER-bound ribosomes to maintain cellular homeostasis in eukaryotes.
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 genetics RNA
- medical and health sciences basic medicine physiology homeostasis
- natural sciences biological sciences biochemistry biomolecules proteins enzymes
You need to log in or register to use this function
We are sorry... an unexpected error occurred during execution.
You need to be authenticated. Your session might have expired.
Thank you for your feedback. You will soon receive an email to confirm the submission. If you have selected to be notified about the reporting status, you will also be contacted when the reporting status will change.
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.
-
HORIZON.1.1 - European Research Council (ERC)
MAIN PROGRAMME
See all projects funded under this programme
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
See all projects funded under this funding scheme
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-2021-COG
See all projects funded under this callHost institution
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.
69117 Heidelberg
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.