Project description
Cellular mechanisms to maintain a healthy proteome
Proteostasis is a mechanism that helps cells maintain a healthy proteome, and loss of this function has been linked to ageing and disease. The cells preserve proteostasis using protein quality control (PQC) pathways that monitor a protein's fate from synthesis to degradation. Exposed hydrophobic residues in aberrant or mislocalised proteins are the signals recognised by distinct PQC mechanisms. The objective of the EU-funded HyDegronomics project is to carry out a comprehensive investigation of the exposed hydrophobicity and the PQC field. The study will utilise a broad spectrum of methods to understand the physiological significance of PQC mechanisms and how aberrant features in proteins are recognised, generating knowledge on the development of new therapeutic intervention strategies that target abnormal proteins implicated in disease.
Objective
Proteostasis is a highly regulated process by which cells maintain a healthy proteome. Loss of proteostasis is a common feature of aging and disease. To preserve proteostasis, the cell has developed protein quality control (PQC) pathways that monitor a proteins’s fate from synthesis to degradation. Exposed hydrophobic residues in aberrant or mislocalized protein substrates is a key feature recognized by distinct PQC mechanisms. If not handled properly, exposed hydrophobicity can result in protein aggregation and subsequent reduced cell fitness. To prevent accumulation of toxic aggregates, cells are equipped both with chaperones and proteolytic pathways. Within the degradation systems, E3 ligases are the major determinants of specificity, which is achieved through their selective recognition of specific short peptide motifs, or degrons, in substrate proteins. Despite the growing list of PQC players and substrates, it has yet to be determined what are the client range, selectivity and specificity of each of the PQC mechanisms. The objective of this proposal is to systematically investigate the exposed hydrophobicity “code” and to advance the state-of-the-art of the PQC field. Here, we utilize the GPS-peptidome method that we recently developed together with genetics, biochemistry, cell biology and proteomic approaches to: (1) map distinct classes of hydrophobic degrons to elucidate the specificity of substrate selection; (2) identify novel E3 ligases playing a role in PQC pathways, explore redundancies among them and identify endogenous substrates proteome- wide; (3) investigate the physiological significance of PQC mechanisms. This work will provide a comprehensive view of PQC pathways that recognize hydrophobicity. This is critical to further our understanding on how aberrant features in proteins are recognized and can provide valuable information for the development of new therapeutic intervention strategies that target abnormal proteins implicated in disease.
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
- natural sciences biological sciences biochemistry biomolecules proteins proteomics
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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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H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC)
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Topic(s)
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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
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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.
ERC-STG - Starting Grant
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2020-STG
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52900 Ramat Gan
Israel
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