An NSF-like ATPase, p97, and NSF mediate cisternal regrowth from mitotic golgi fragments
نویسندگان
چکیده
منابع مشابه
An NSF-like ATPase, p97, and NSF mediate cisternal regrowth from mitotic golgi fragments
Golgi cisternae regrew in a cell-free system from mitotic Golgi fragments incubated with buffer alone. Pretreatment with NEM or salt washing inhibited regrowth, but this could be restored either by p97, an NSF-like ATPase, or by NSF together with SNAPs and p115, a vesicle docking protein. The morphology of cisternae regrown with p97 and NSF-SNAPs-p115 differed, suggesting that they play distinc...
متن کاملSyntaxin 5 Is a Common Component of the NSF- and p97-Mediated Reassembly Pathways of Golgi Cisternae from Mitotic Golgi Fragments In Vitro
A cell-free system that mimics the reassembly of Golgi stacks at the end of mitosis requires two ATPases, NSF and p97, to rebuild Golgi cisternae. Morphological studies now show that alpha-SNAP, a component of the NSF pathway, can inhibit the p97 pathway, whereas p47, a component of the p97 pathway, can inhibit the NSF pathway. Anti-syntaxin 5 antibodies and a soluble, recombinant syntaxin 5 in...
متن کاملGolgi reassembly after mitosis: the AAA family meets the ubiquitin family.
The Golgi apparatus in animal cells breaks down at the onset of mitosis and is later rebuilt in the two daughter cells. Two AAA ATPases, NSF and p97/VCP, have been implicated in regulating membrane fusion steps that lead to regrowth of Golgi cisternae from mitotic fragments. NSF dissociates complexes of SNARE proteins, thereby reactivating them to mediate membrane fusion. However, NSF has a sec...
متن کاملCytosolic ATPases, p97 and NSF, are sufficient to mediate rapid membrane fusion.
Much recent work has focussed on the role of membrane-bound components in fusion. We show here that p97 and NSF are sufficient to mediate rapid membrane fusion. Fractionation of cytosol revealed that p97 and its co-factor, p47, constitutes the major fusion activity. This was confirmed by depleting p97 from the cytosol, which resulted in an 80% decrease in fusion. Using purified protein, p97 or ...
متن کاملA Role for the Vesicle Tethering Protein, P115, in the Post-Mitotic Stacking of Reassembling Golgi Cisternae in a Cell-Free System
During telophase, Golgi cisternae are regenerated and stacked from a heterogeneous population of tubulovesicular clusters. A cell-free system that reconstructs these events has revealed that cisternal regrowth requires interplay between soluble factors and soluble N-ethylmaleimide (NEM)-sensitive fusion protein (NSF) attachment protein receptors (SNAREs) via two intersecting pathways controlled...
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: Cell
سال: 1995
ISSN: 0092-8674
DOI: 10.1016/0092-8674(95)90270-8