Results 21 to 30 of about 47,795 (200)

Control systems for membrane fusion in the ancestral eukaryote; evolution of tethering complexes and SM proteins

open access: yesBMC Evolutionary Biology, 2007
Background In membrane trafficking, the mechanisms ensuring vesicle fusion specificity remain to be fully elucidated. Early models proposed that specificity was encoded entirely by SNARE proteins; more recent models include contributions from Rab ...
Coulson Richard MR   +3 more
doaj   +1 more source

A distinct tethering step is vital for vacuole membrane fusion

open access: yeseLife, 2014
Past experiments with reconstituted proteoliposomes, employing assays that infer membrane fusion from fluorescent lipid dequenching, have suggested that vacuolar SNAREs alone suffice to catalyze membrane fusion in vitro.
Michael Zick, William T Wickner
doaj   +1 more source

Molecular mechanisms of atlastin-mediated ER membrane fusion revealed by a FRET-based single-vesicle fusion assay

open access: yesScientific Reports, 2017
Homotypic fusion of endoplasmic reticulum membranes is driven by atlastin GTPases; however, the underlying mechanism remains largely unknown. Here, using a FRET-based single-vesicle fusion assay with liposomes bearing the yeast atlastin Sey1p, we ...
Kyung Tae Kim   +6 more
doaj   +1 more source

The Golgin Family of Coiled-Coil Tethering Proteins

open access: yesFrontiers in Cell and Developmental Biology, 2016
The golgins are a family of predominantly coiled-coil proteins that are localized to the Golgi apparatus. Golgins are present in all eukaryotes, suggesting an evolutionary conserved function.
Tomasz M Witkos, Martin eLowe
doaj   +1 more source

CAPS and Munc13: CATCHRs that SNARE vesicles

open access: yesFrontiers in Endocrinology, 2013
. CAPS (Calcium-dependent Activator Protein for Secretion, aka CADPS) and Munc13 (Mammalian Unc-13) proteins function to prime vesicles for Ca2+-triggered exocytosis in neurons and neuroendocrine cells.
Declan J James, Thomas F J Martin
doaj   +1 more source

Armadillo motifs involved in vesicular transport. [PDF]

open access: yesPLoS ONE, 2010
Armadillo (ARM) repeat proteins function in various cellular processes including vesicular transport and membrane tethering. They contain an imperfect repeating sequence motif that forms a conserved three-dimensional structure.
Harald Striegl   +2 more
doaj   +1 more source

Recent Advances in Membrane Shaping for Plant Autophagosome Biogenesis

open access: yesFrontiers in Plant Science, 2020
Autophagy is an intracellular degradation process, which is highly conserved in eukaryotes. During this process, unwanted cytosolic constituents are sequestered and delivered into the vacuole/lysosome by a double-membrane organelle known as an ...
Cheuk-Ling Wun   +2 more
doaj   +1 more source

Direct observation of molecular arrays in the organized smooth endoplasmic reticulum

open access: yesBMC Cell Biology, 2009
Background Tubules and sheets of endoplasmic reticulum perform different functions and undergo inter-conversion during different stages of the cell cycle.
Korkhov Vladimir M, Zuber BenoƮt
doaj   +1 more source

Expression of a glycosylphosphatidylinositol-anchored ligand, growth hormone, blocks receptor signalling

open access: yesBioscience Reports, 2012
We have investigated the interaction between GH (growth hormone) and GHR (GH receptor). We previously demonstrated that a truncated GHR that possesses a transmembrane domain but no cytoplasmic domain blocks receptor signalling.
François Guesdon   +8 more
doaj   +1 more source

The cortical acto-myosin network: from diffusion barrier to functional gateway in the transport of neurosecretory vesicles to the plasma membrane

open access: yesFrontiers in Endocrinology, 2013
Dysregulation of regulated exocytosis is linked to an array of pathological conditions, including neurodegenerative disorders, asthma and diabetes. Understanding the molecular mechanisms underpinning neuroexocytosis including the processes that allow ...
Andreas ePapadopulos   +3 more
doaj   +1 more source

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