Natural substrates of the central endoplasmic reticulum quality control glycoprotein sensors UDP-glucose:glycoproteinglucosyltransferase (UGGT)1 and UGGT2 were identified using a glycoproteomics approach and the role for their modification was explored.
TANGO1 functions as a linactant filament to stabilize shallow COPII-coated buds, and after which membrane tension regulation, possibly mediated by TANGO1-controlled membrane fusion, facilitates bud elongation for procollagen export.
Erythroid-enriched BMP2K kinase, in addition to its predicted function in endocytosis, regulates distribution and abundance of COPII assemblies and autophagic degradation through opposing actions of its two splicing variants.
An unbiased model for the self-organisation of the Golgi apparatus displays either anterograde vesicular transport or cisternal maturation depending on ratios of budding, fusion and biochemical conversion rates.
In yeast, a fluorescent vacuolar cargo departs from Golgi cisternae early in the TGN stage of maturation, and traffic from prevacuolar endosomes to the vacuole apparently involves a kiss-and-run mechanism.