Autophagy: Cells SNARE Selves

نویسنده

  • Christopher Stroupe
چکیده

Autophagosomes sequester cytosolic constituents and deliver this cargo to lysosomes for destruction. Two groups now report that autophagosome maturation requires homotypic membrane fusion catalyzed by SNARE proteins.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

SNAREd into autophagy

Autophagy is a conserved, intracellular bulk degradation process that mediates the turnover of organelles and longlived proteins. During autophagy, cytoplasmic components and organelles are sequestered in a double-membrane vesicle (the autophagosome) that fuses with the lysosome, thereby delivering its contents for lysosomal degradation. Deregulated autophagy is implicated in cancer and in some...

متن کامل

Dedicated SNAREs and specialized TRIM cargo receptors mediate secretory autophagy.

Autophagy is a process delivering cytoplasmic components to lysosomes for degradation. Autophagy may, however, play a role in unconventional secretion of leaderless cytosolic proteins. How secretory autophagy diverges from degradative autophagy remains unclear. Here we show that in response to lysosomal damage, the prototypical cytosolic secretory autophagy cargo IL-1β is recognized by speciali...

متن کامل

SNARE priming is essential for maturation of autophagosomes but not for their formation

Autophagy, a unique intracellular membrane-trafficking pathway, is initiated by the formation of an isolation membrane (phagophore) that engulfs cytoplasmic constituents, leading to generation of the autophagosome, a double-membrane vesicle, which is targeted to the lysosome. The outer autophagosomal membrane consequently fuses with the lysosomal membrane. Multiple membrane-fusion events mediat...

متن کامل

The 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 کامل

Legionella blocks autophagy by cleaving STX17 (syntaxin 17)

Pathogens subvert host defense systems including autophagy and apoptosis for their survival and proliferation. Legionella pneumophila is a Gram-negative bacterium that grows in alveolar macrophages and causes severe pneumonia. Early during infection Legionella secretes effector proteins that convert the plasma membrane-derived vacuole containing Legionella into an endoplasmic reticulum (ER)-lik...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Current Biology

دوره 21  شماره 

صفحات  -

تاریخ انتشار 2011