Several protein-protein interactions are essential to membrane fusion during endocytosis. Membrane fusion requires interaction among SNARE1 proteins associated with both donor and acceptor membranes (1,2). Following membrane fusion, the α-SNAP cytoplasmic adapter protein binds to the SNARE complex. N-ethylmaleimide-sensitive factor (NSF), a hexameric ATPase, then associates with the α-SNAP/SNARE complex to mediate SNARE disassembly during membrane fusion (3,4). The ATPase activity of NSF induces a conformational change in the α-SNAP/SNARE complex that leads to its dissociation from the membrane, membrane fusion and eventual recycling of the SNARE complex for subsequent membrane fusion (3,4).
Function:
Required for vesicle-mediated transport. Catalyzes the fusion of transport vesicles within the Golgi cisternae. Is also required for transport from the endoplasmic reticulum to the Golgi stack. Seem to function as a fusion protein required for the delivery of cargo proteins to all compartments of the Golgi stack independent of vesicle origin.
Subunit:
Homohexamer. Interacts with GABARAP and GABARAPL2. Interacts with GRIA2. Interacts with PLK2, leading to disrupt the interaction with GRIA2. Interacts with MUSK; may regulate MUSK endocytosis and activity (By similarity). Interacts with CDK16 (By similarity).
Subcellular Location:
Cytoplasm.
Post-translational modifications:
Phosphorylation at Ser-569 interferes with homohexamerization (By similarity).
Sample: U937 (Human) Cell Lysate at 30 ug Spleen (Mouse) Lysate at 40 ug Lymph node (Mouse) Lysate at 40 ug Cerebellum (Mouse) Lysate at 40 ug Primary: Anti-NSF (bs-11255R) at 1/1000 dilution Secondary: IRDye800CW Goat Anti-Rabbit IgG at 1/20000 dilution Predicted band size: 83 kD Observed band size: 83 kD
Sample: Lane 1: Mouse Cerebrum tissue lysates Lane 2: Mouse Cerebellum tissue lysates Lane 3: Rat Cerebrum tissue lysates Lane 4: Rat Cerebellum tissue lysates Lane 5: Human SH-SY5Y cell lysates Lane 6: Human HeLa cell lysates Lane 7: Human THP-1 cell lysates Primary: Anti-NSF (bs-11255R) at 1/1000 dilution Secondary: IRDye800CW Goat Anti-Rabbit IgG at 1/20000 dilution Predicted band size: 83 kDa Observed band size: 75 kDa