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Content archived on 2024-06-18

Nanomechanics of proteins involved in viral and bacterial infections

Objective

Viruses and bacteria utilize proteins to attach and infect cells and tissues. Viruses have envoloped proteins that especifically recongnize receptors in the surface of the target cells. HIV-1 recognices receptor CD4 in the surface of T cell throghout its envolope glycoprotein gp120. In the case of bacteria, they attach to tissues using long filament called pilus. Bacterial pilus type 1 is composed of several protein subunit arranged in chain, FimA-FimG-FimG-FimH. The more external domain, FimH, is the adhesin binding domain that establishes the mechanical anchoring to tissues. Both, bacterial and viral proteins withstand mechanical forces than can go from few piconewtons to hundreds. However, very little is known about how force modify the structure and features of these proteins and ultimately how its affects infection. In this project we aim to investigate the effect of mechanical forces in the anchoring proteins and its role during attachment. We will concentrate in viral receptors CD4 and bacterial fimbriae proteins (Fim). We will use a novel atomic force spectometer that allows us to apply calibrated forces to a single protein molecule. This technique allows also monitoring chemical reaction under force such as the reduction of disulfide bonds or the binding of peptides and antibodies. These processes are known to be implicated in the infection of viruses and bacteria and they may have a mechanical origin. We will use bioinformatics and high-throughout screening techniques to identify molecules that alter the nanomecanichs of these anchoring proteins and that can potentially be used to prevent infections.

Fields of science (EuroSciVoc)

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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.

Call for proposal

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

FP7-PEOPLE-2013-CIG
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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.

MC-CIG - Support for training and career development of researcher (CIG)

Coordinator

ASOCIACION CENTRO DE INVESTIGACION COOPERATIVA EN NANOCIENCIAS CIC NANOGUNE
EU contribution
€ 100 000,00
Address
TOLOSA HIRIBIDEA 76
20018 San Sebastian
Spain

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Region
Noreste País Vasco Gipuzkoa
Activity type
Research Organisations
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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.

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