Final answer:
Multi-subunit tethers and coiled coil tethers are responsible for tethering vesicles to the Golgi and endosomes, facilitating the docking process for membrane fusion.
Step-by-step explanation:
The type of tethers that work on the Golgi and on endosomes are called multi-subunit tethers and coiled coil tethers. Multi-subunit tethers, as the name suggests, are complexes composed of multiple protein subunits that facilitate the recognition and docking of transport vesicles to their target membranes. On the other hand, coiled coil tethers are long, elongated proteins that also aid in vesicle tethering to target membranes through interactions mediated by their coiled-coil domains. Clathrin tethers refer to the proteins associated with forming clathrin-coated vesicles during endocytosis, but they are not tethers for the docking process itself. Similarly, sorting nexin tethers are part of the machinery for endosomal sorting rather than for tethering vesicles to target membranes.