Bif-1 regulates Atg9 trafficking by mediating the fission of Golgi membranes during autophagy
نویسندگان
چکیده
منابع مشابه
Calpain mobilizes Atg9/Bif-1 vesicles from Golgi stacks upon autophagy induction by thapsigargin
CAPNS1 is essential for stability and function of the ubiquitous calcium-dependent proteases micro- and milli-calpain. Upon inhibition of the endoplasmic reticulum Ca2+ ATPase by 100 nM thapsigargin, both micro-calpain and autophagy are activated in human U2OS osteosarcoma cells in a CAPNS1-dependent manner. As reported for other autophagy triggers, thapsigargin treatment induces Golgi fragment...
متن کاملThe Bif-1-Dynamin 2 membrane fission machinery regulates Atg9-containing vesicle generation at the Rab11-positive reservoirs
Atg9 is a multispanning transmembrane protein that is required for autophagosome formation. During autophagy, vesicles containing Atg9 are generated through an unknown mechanism and delivered to the autophagosome formation sites. We have previously reported that Atg9-containing membranes undergo continuous tubulation and fission during nutrient starvation in a manner dependent on the curvature-...
متن کاملTBC1D14 regulates autophagy via the TRAPP complex and ATG9 traffic
Macroautophagy requires membrane trafficking and remodelling to form the autophagosome and deliver its contents to lysosomes for degradation. We have previously identified the TBC domain-containing protein, TBC1D14, as a negative regulator of autophagy that controls delivery of membranes from RAB11-positive recycling endosomes to forming autophagosomes. In this study, we identify the TRAPP comp...
متن کاملAutophagy in the context of the cellular membrane-trafficking system: the enigma of Atg9 vesicles
Macroautophagy is an intracellular degradation system that involves the de novo formation of membrane structures called autophagosomes, although the detailed process by which membrane lipids are supplied during autophagosome formation is yet to be elucidated. Macroautophagy is thought to be associated with canonical membrane trafficking, but several mechanistic details are still missing. In thi...
متن کاملThe Roles of the SNARE Protein Sed5 in Autophagy in Saccharomyces cerevisiae
Autophagy is a degradation pathway in eukaryotic cells in which aging proteins and organelles are sequestered into double-membrane vesicles, termed autophagosomes, which fuse with vacuoles to hydrolyze cargo. The key step in autophagy is the formation of autophagosomes, which requires different kinds of vesicles, including COPII vesicles and Atg9-containing vesicles, to transport lipid double-m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Autophagy
سال: 2011
ISSN: 1554-8627,1554-8635
DOI: 10.4161/auto.7.1.14015