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RESIST

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Receptor Ectodomain Shedding in Plant Immune Signal Transduction

Receptor ectodomain shedding (shedding) is a fundamental mechanism of the regulation of communication between mammalian cells. Shedding refers to the proteolytic cleavage of the extracellular portion of a membrane protein. This pr... ver más

28/02/2025

FZJ

190K€

Presupuesto del proyecto: 190K€

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FORSCHUNGSZENTRUM JULICH GMBH No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

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Financiación concedida El organismo HORIZON EUROPE notifico la concesión del proyecto el día 2025-02-28

HORIZON-MSCA-2021-PF-01-01: MSCA Postdoctoral Fellowships 2021 ExpectedOutcome:

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Duración del proyecto: 32 meses Fecha Inicio: 2022-06-20
Fecha Fin: 2025-02-28

Líder del proyecto

FORSCHUNGSZENTRUM JULICH GMBH No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 190K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Receptor ectodomain shedding (shedding) is a fundamental mechanism of the regulation of communication between mammalian cells. Shedding refers to the proteolytic cleavage of the extracellular portion of a membrane protein. This process can inactivate the function of a receptor, generate extracellular signalling molecules and trigger the generation of intracellular protein forms involved in signalling. Shedding is best understood in mammals, with hundreds of shedding events reported, but also occurs in other animals and fungi. A few cases of shedding have been observed in plants. Membrane receptor like kinases (RLKs) constitute the main players of cell-to-cell communication in plants, with many of them serving as key immune receptors. RLK shedding has been reported in two occasions, pointing to an important regulatory function. Despite the essential functions of shedding in animals, the biological significance of RLK shedding in plants, and the fact that plant cells harbour many more receptors than their animal counterparts, shedding has yet to be studied systematically in plants. By reanalysis of large scale extracellular proteome datasets, I found evidence of widespread RLK shedding events in plants. However, this analysis could not reveal exact cleavage sites that are important for follow up functional studies. Trough RESIST, I seek to develop this new field of ectodomain shedding in plant biology and study the mechanisms of regulation and the consequences of plant RLK shedding. To do so, I aim to establish a platform for experimental identification of shedding events in plants by adapting cutting edge methods recently developed in medical sciences for precise identification of processed membrane proteins and released ectodomains in Nicotiana benthamiana. I will use this platform to analyse the plant sheddome (the repertoire of shed proteins) and its dynamics upon defence activation and to identify interesting shedding events for functional characterization.

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