Project description
Coming out of the darkness: understanding metabolic fluxes in phototrophic eukaryotes
Most of us are familiar with circadian rhythms, oscillatory internal timing conforming to the 24-hour rotation of the Earth. Metabolic processes are strongly linked to them to optimise energy use across the light-dark cycle. Similarly, dark-light transitions are very important to phototrophs, which get their energy from sunlight through photosynthesis. Dark-light transitions provoke changes in the redox state of photosynthetic components that modulate metabolic fluxes. The EU-funded CHLARABIDOX project studies the proteome-wide dynamics in response to light in two phototrophic species (the green alga Chlamydomonas reinhardtii and the plant Arabidopsis thaliana). High temporal resolution of light-induced redox-related metabolic changes could help manipulate energy processes for biofuels production and identify modifications that help plants adjust to climate change.
Objective
Most organisms exhibit a diurnal metabolic cycle, especially phototrophs, whose metabolism is strictly dependent on light. Dark-light transitions are accompanied by dramatic changes in the redox state of photosynthetic components, which drives redox-based post-translational modification of protein cysteines, whose oxidation state can considerably impact protein activity, and thus regulate metabolism. Given the central role of redox metabolism in biology, the operation of thiol-disulphide based switches are well-appreciated as a metabolic acclimation strategy, and the study of cysteine modifications in proteomes is a major interest of contemporary biology. The objective of CHLARABIDOX is to go beyond inventories of redox modified proteins by monitoring the proteome-wide dynamics of disulphide-dithiol status in the context of a diurnal metabolic cycle in phototrophic eukaryotes, specifically, the green alga Chlamydomonas reinhardtii and the land plant Arabidopsis thaliana. An innovative chemoproteomic isoTOP-ABPP approach will be used in an experimental design with deep temporal resolution to capture a good fraction of the proteome with site specificity and quantitative information about reactivity. The discoveries will be made in the context of a body of literature on thioredoxin-dependent redox regulation of central carbon metabolism, which will serve as a priori validation. The outcome of the project is a proteome-wide view of the operation of regulatory redox sensors, anchored to accompanying rich datasets on physiology, metabolic potential, transcriptomics, proteomics and central metabolites, which would inform the operation of light-driven metabolic networks. Both systems are compatible with downstream modelling of diurnal metabolic fluxes and validation by reverse genetics approaches. A long term impact on strategies for manipulating metabolism for biofuels production, or manipulating photosynthesis for better acclimation to climate change is also envisioned.
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 proteins proteomics
- natural sciences biological sciences microbiology phycology
- natural sciences chemical sciences electrochemistry electrolysis
- natural sciences earth and related environmental sciences atmospheric sciences climatology climatic changes
- natural sciences biological sciences botany
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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.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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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.
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)
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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) H2020-MSCA-IF-2019
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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.
41004 Sevilla
Spain
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.