Objective
An impressive variety of motile and morphogenetic processes are driven by site-directed polarized asssembly of actin filaments. In the past ten years, breathtaking advances coming from cell biology, cell biophysics, and biochemistry have brought insight into the molecular bases for production of force and movement by site-directed actin polymerization. Yet, we do not know, with the detail sufficient to understand how force is produced, by which molecular mechanisms the filaments are nucleated or created by branching. We do not know by which elementary steps insertional polymerization of barbed ends of filaments against the membrane is performed by different protein machineries, nor how these machineries work in a coordinated fashion. Here we propose a multiscale and interdisciplinary approach of the mechanisms used by the major actin nucleators to organize the motile response of actin. The elementary reactions involved in the processive walk of formin at the growing barbed ends of filaments and the role of ATP hydrolysis in force production will be analyzed by a combination of biochemical solution studies and physical methods using functionalized GUVs and optical tweezers. The multifunctionality of WH2 domains involved in actin sequestration, filament nucleation severing and processive elongation will be similarly examined in an interdisciplinary perspective from structural biology at atomic resolution to physics at the mesoscopic scale. Biochemical and structural methods and single molecule measurements (TIRFM) will shed light into the elementary steps and structural mechanism of filament branching. Biomimetic assays with functionalized GUVs associated with biophysical methods like FRAP or fluorescence correlation spectroscopy will elucidate how different filament initiating machineries segregate in the membrane as a consequence of their interactions with growing filaments and function in a coordinated fashion during actin-based motility.
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: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
- natural sciences physical sciences condensed matter physics soft matter physics
- natural sciences biological sciences cell biology
- natural sciences biological sciences biophysics
- natural sciences biological sciences molecular biology structural biology
- natural sciences physical sciences optics spectroscopy
You need to log in or register to use this function
We are sorry... an unexpected error occurred during execution.
You need to be authenticated. Your session might have expired.
Thank you for your feedback. You will soon receive an email to confirm the submission. If you have selected to be notified about the reporting status, you will also be contacted when the reporting status will change.
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.
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.
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.
ERC-2009-AdG
See other projects for this call
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.
Host institution
75794 PARIS
France
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.