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Tethering of a transport vesicle to a target membrane involves all of the following players EXCEPT:

1) Rab GTPases
2) SNARE proteins
3) tethering factors
4) dynamin

1 Answer

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Final answer:

Dynamin is not involved in tethering of transport vesicles to target membranes; it is involved in vesicle formation during endocytosis. Other players like Rab GTPases, tethering factors, and SNARE proteins are the main factors in the tethering, docking, and fusion of transport vesicles.

Step-by-step explanation:

Tethering of a transport vesicle to a target membrane involves all of the following players EXCEPT dynamin. Dynamin is primarily involved in the formation of coated vesicles during endocytosis, not in vesicle tethering, docking, or fusion processes at the target membrane.

Rab GTPases are responsible for the identification and tethering of vesicles to the appropriate target membranes. Tethering factors also contribute to this process by mediating the initial contact between vesicles and membranes. Finally, vesicle SNAREs (v-SNAREs) and target SNAREs (t-SNAREs) facilitate the docking and eventual fusion of the vesicle with the target membrane, ensuring the precise delivery of their cargo.

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