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CUPS

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Reconstitution of CUPS in vitro and assessing the mechanism of their cargo packi...

Reconstitution of CUPS in vitro and assessing the mechanism of their cargo packing during unconventional protein secretion Most proteins secreted by eukaryotic cells use the endoplasmic reticulum (ER)-to-Golgi pathway of secretion. This is dependent on signal-peptide sequences that ensure protein translocation into the ER and their progress to the cel... ver más

29/02/2016

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166K€

Presupuesto del proyecto: 166K€

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Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2016-02-29 No tenemos la información de la convocatoria

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Líder del proyecto

FUNDACIO PRIVADA CENTRE DE REGULACIO GENOMICA Otras actividades deportivas asociacion

TRL 4-5 | 50K€

Presupuesto del proyecto 166K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Most proteins secreted by eukaryotic cells use the endoplasmic reticulum (ER)-to-Golgi pathway of secretion. This is dependent on signal-peptide sequences that ensure protein translocation into the ER and their progress to the cell surface through vesicular flow via the Golgi apparatus. However, a substantial number of proteins that lack a signal-peptide sequence are secreted without entering the classical ER-to-Golgi pathway. Instead they follow the so-called unconventional pathway of protein secretion. A well established route within this unconventional pathway refers to cytoplasmic proteins transported to the extracellular environment by autophagosome-like vesicles, such as the Saccharomyces cerevisiae protein Acb1. Secretion of Acb1 in yeast cells is concomitant with the biogenesis of recently characterized membrane structures called CUPS (compartments for unconventional protein secretion) which are thought to function as a sorting platform for Acb1 secretion and possibly for other proteins known to follow similar routes of secretion. The overall aim of this proposal is to further characterize the biogenesis of CUPS in Saccharomyces cerevisiae and to understand their role in the unconventional pathway of secretion, i.e., to address the hypothesis that CUPS are sorting platforms for proteins to be unconventionally secreted. Determining the composition of CUPS, understanding their biogenesis and how their cargo is sorted will surely provide mechanistic insight on how Acb1 and other proteins, which include the inflammatory cytokine IL-1β or Galectin-3 in mammalian cells, are secreted.

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