Objective
Proton transfer (PT) reactions within proteins are fundamental in biological systems, such as within ATP production. To date, there are no direct means to measure specific PT pathways within proteins, and most research is based on following the end-product of the PT reaction across a natural proton pathway. Here, our goal is to develop a novel way to directly measure PT within proteins. Our new approach is based on placing proton donors and acceptors in specific places within proteins, in which the PT will be initiated only after light excitation of the system. To do so, we introduce here two noncanonical amino acids (ncAA) we developed, with a photoacid and a photobase as their residues that serve as the proton donor and acceptor, respectively. Our hypothesis is that the strong light-triggered driving force of PT in the excited-state (of ~11 pKa units) will initiate PT along the pathway from donor to acceptor. In the first objective, we will use our new ncAA with solid-phase peptide synthesis to design several peptide systems that will allow us to decipher the role of specific amino acids, the peptide structure, and the role of water in PT across the peptide using various ultrafast spectroscopy. In the second objective, we aim to design a mutually orthogonal system for the insertion of our two ncAA into a single protein. In our third objective, we plan to use our new experimental system for answering a unique set of questions in the field of biological PT that could not have been answered before, focusing on the systems of ATP synthase transmembrane complex and the soluble carbonic anhydrase enzyme. Our new approach is groundbreaking in the way we study and understand PT in biology and will enable researchers completely new capabilities resulting in fascinating new discoveries. Moreover, our new system can be translated into other fields in biology that require the local change in proton concentration within proteins.
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 enzymes
- natural sciences physical sciences optics spectroscopy
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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-COG
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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.
32000 Haifa
Israel
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.