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Rational Design of Photoreceptor Mutants with Desired Photochemical Properties

Objective

From a technological viewpoint photoreceptor proteins, the light-sensitive proteins involved in the sensing and response to light in a variety of organisms, represent biological light converters. Hence they are successfully utilized in a number of technological applications, e.g. the green-fluorescent protein used to visualize spatial and temporal information in cells. However, despite the ground-breaking nature of this utilization in life science and other disciplines, the attempts to design a photoreceptor for a particular application by protein mutation remains an open challenge. This is exactly the scope of my research proposal: the application of multi-scale modelling for the systematic design of biological photoreceptor mutants.

With this target in mind I will study representatives of two prominent photoreceptor proteins subfamilies which are of towering interest to experimentalists: proteorhodopsins and cyanobacteriochromes. Computer models of these proteins will be constructed using accurate multi-scale modeling. Their excitation energies and other properties (e.g. excited-state reactivity and efficiency) will be calculated using multireference methods that were shown to have an accuracy of <3 kcal/mol. The insights gained from simulations of the wild-type proteins will provide the basis for proposing mutations with altered photochemical properties: in essence to predict absorption and emission spectra, excited-state lifetime and quantum yields.

This research requires interactions across the disciplines, as the best candidates will be synthesized and characterized experimentally by collaborators. The outcome of these experiments will provide feedback to improve both the properties of the mutants and the simulation methodology. Ultimately this high-risk/high gain project should derive a comprehensive understanding that would result in novel biotechnological applications, e.g. optogenetic tools, fluorescent probes and biosensors.

Fields of science (EuroSciVoc)

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Programme(s)

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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.

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.

ERC-STG - Starting Grant

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) ERC-2015-STG

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Host institution

THE HEBREW UNIVERSITY OF JERUSALEM
Net EU contribution

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.

€ 1 397 475,00
Address
EDMOND J SAFRA CAMPUS GIVAT RAM
91904 JERUSALEM
Israel

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Activity type
Higher or Secondary Education Establishments
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Total cost

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.

€ 1 397 475,00

Beneficiaries (1)

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