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Contenido archivado el 2024-05-27

Regulatory mechanisms of wingless degradation

Objetivo

Wingless is a secreted glycoprotein that acts as a morphogen and plays fundamental roles in body patterning and cell differentiation. To prevent ectopic signaling, mechanisms have evolved that confine its range of action. One such mechanism has been discovered by the group that I am joining. In Drosophila embryos, the action of Wingless towards the posterior is limited by an EGFR -regulated pathway that targets this molecule for lysosomal degradation. My aim is to uncover the cell biological basis of this phenomenon. Using a genetic approach, I will identify the receptor(s) of Wingless that are responsible for its degradation. I will then study biochemically whether the receptor(s) undergo( es) post-translational modifications that might regulate the degradation process. The receptors will also be mutagenised in vitro and their ability to mediate degradation assayed. Together, these two approaches will allow me to map the sites, within the cytoplasmic tail of those receptors, that are required for regulated lysosomal targeting. In parallel I will identify additional proteins that regulate the degradation process. This will be done in two different ways:
1 ) using RNA-i to test the role of candidate molecules and
2) isolating biochemically proteins that interact with the receptor only at the stage when the degradation process is activated.

Ámbito científico (EuroSciVoc)

Programa(s)

Tema(s)

Datos no disponibles

Convocatoria de propuestas

Datos no disponibles

Régimen de financiación

RGI - Research grants (individual fellowships)

Coordinador

MRC National Institute for Medical Research
Aportación de la UE
Sin datos
Dirección
The Ridgeway Mill Hill
NW7 1AA London
Reino Unido
Coste total
Sin datos