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MEMLESSINTERFACE

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Interface between Membraneless Organelles and Membranes

Liquid-liquid phase separation is a major mechanism for organizing macromolecules, particularly proteins with intrinsically disordered regions, in compartments not limited by a membrane. Many such compartments (also known as biomo... ver más

28/02/2029

BUNDESMINISTERIUM...

1M€

Presupuesto del proyecto: 1M€

Líder del proyecto

BUNDESMINISTERIUM FUER GESUNDHEIT No se ha especificado una descripción o un objeto social para esta compañía.

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo HORIZON EUROPE notifico la concesión del proyecto el día 2023-10-18

ERC-2022-STG: ERC STARTING GRANTS Scope:Objectives

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1 Participantes

BUNDESMINISTERIUM FUER GESUN...

1.50M€ | Lider

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Duración del proyecto: 64 meses Fecha Inicio: 2023-10-18
Fecha Fin: 2029-02-28

Líder del proyecto

BUNDESMINISTERIUM FUER GESUNDHEIT No se ha especificado una descripción o un objeto social para esta compañía.

Presupuesto del proyecto 1M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Liquid-liquid phase separation is a major mechanism for organizing macromolecules, particularly proteins with intrinsically disordered regions, in compartments not limited by a membrane. Many such compartments (also known as biomolecular condensates) have been described, and it is currently agreed that they take over several cellular functions. To do so, they need to interact with other compartments, just as the membrane-bound organelles interact with each other through well-defined contact sites. However, at present no concept exists explaining how membrane-less and membrane-bound organelles interact. I propose here to address this question by determining the molecular mechanisms and functional impact of the interactions between liquid phases and membranes. I hypothesize that a novel type of contact sites between membrane-less organelles and membranes, which I termed dipping contacts, is critical for coupling of diffusion and material properties of condensates to biochemical processes occurring in the membrane-bound compartments. To test this, I will capitalize on a prominent biomolecular condensate that I characterized a few years ago, and which has already been used widely in the literature: the synaptic vesicle (SV) condensate, which clusters SVs together with proteins such as synapsins and synucleins. For this, I have already developed advanced reconstitution tools, single-molecule tracking and genetic code expansion in living neurons, which will enable me to determine: i) how the material properties of SV condensates are regulated, ii) how they recruit specific organelles, while rejecting others, iii) the proteins that mediate signaling and interactions of SV condensates with mitochondria and the ER. Overall, this project will lead to an understanding of the interface between condensates and classical organelles, which is extremely relevant in the context of aggregation-related diseases where faulty inclusions of membranes and proteins play a leading role.

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