Final answer:
Rab effectors are proteins involved in regulating vesicle trafficking within cells by interacting with Rab proteins and other cellular components.
Step-by-step explanation:
Rab effectors are proteins involved in regulating vesicle trafficking within cells. Rab effectors interact with Rab proteins, which are small GTPases that help guide vesicles to their target destination. For example, Rab effectors can form a bridge between a Rab protein and another protein or membrane to facilitate vesicle transport.
One example of a Rab effector is Rabphilin, which binds to the Rab3 family of proteins and helps regulate neurotransmitter release in nerve cells.
In summary, Rab effectors play a crucial role in ensuring proper vesicle transport within cells, and they achieve this by interacting with Rab proteins and other cellular components.