Autophagosome formation: Where the secretory and autophagy pathways meet.

Abstract:

:The upregulation of autophagosome formation in response to nutrient deprivation requires significant intracellular membrane rearrangements that are poorly understood. Recent findings have implicated COPII-coated vesicles, well known as ER-Golgi cargo transport carriers, as key players in macroautophagy. The role of COPII vesicles in macroautophagy and how they interact with autophagy-related (Atg) proteins was unknown. In our recent report, we show that during nutrient deprivation, phosphorylation of the membrane-distal surface of the COPII coat subunit Sec24 facilitates the interaction of Sec24 with the Atg machinery (specifically, Atg9) to regulate the abundance of autophagosomes during starvation. Phosphorylation of Sec24 is specifically required for macroautophagy, but not ER-Golgi transport. These findings begin to unravel the unique function of COPII vesicles during starvation-induced macroautophagy.

journal_name

Autophagy

journal_title

Autophagy

authors

Wang J,Davis S,Zhu M,Miller EA,Ferro-Novick S

doi

10.1080/15548627.2017.1287657

subject

Has Abstract

pub_date

2017-05-04 00:00:00

pages

973-974

issue

5

eissn

1554-8627

issn

1554-8635

journal_volume

13

pub_type

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