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Chemical biology of autophagy

Obiettivo

Autophagy is a cellular pathway that regulates the degradation and recycling of proteins and organelles. This mechanism is initiated with the formation of a phagophore, a cup-shaped double membrane that engulfs the cytoplasmic material to be degraded. The phagophore is then elongated and sealed to generate an autophagosome that will be fused with a lysosome, thereby delivering the cargo for degradation. Several ubiquitin-like proteins have been shown to have a crucial role in regulating autophagosome generation and its fusion with the lysosome. One of these proteins is LC3-I, is a soluble cytosolic protein that associates with the autophagosome after C-terminal conjugation to a phosphatidylethanolamine unit (LC3-II). This membrane association is reversibly modulated by the cysteine protease atg4, which deconjugates PE from LC3-II, thus recycling the soluble LC3-I. Detailed studies of the molecular mechanism regulating autophagosome formation and the role of LC3-I and LC3-II are unknown, mainly due to the lack of tools enabling a profound characterization of these processes. Herein, we propose the generation of semisynthetic lipidated LC3 proteins using a chemical biology approach. The fully modified proteins should be unvaluable tools that will contribute to the characterization of the factors regulating autophagy.

Campo scientifico (EuroSciVoc)

Argomento(i)

Invito a presentare proposte

FP7-PEOPLE-2012-CIG
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Meccanismo di finanziamento

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

Coordinatore

AGENCIA ESTATAL CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS
Contributo UE
€ 100 000,00
Indirizzo
CALLE SERRANO 117
28006 Madrid
Spagna
Regione
Comunidad de Madrid Comunidad de Madrid Madrid
Tipo di attività
Research Organisations
Collegamenti
Costo totale
Nessun dato