Which sequence correctly describes the role of calcium-sensing proteins and the SNARE complex in the synaptic vesicle cycle?

• A. Calcium triggers vesicle fusion; SNAREs mediate docking/fusion; vesicle membranes recycled via endocytosis; clathrin-mediated; dynamin uncoating.
• B. Vesicles fuse independently of calcium; SNAREs degrade neurotransmitters; Endocytosis occurs spontaneously without proteins.
• C. Calcium prevents vesicle fusion; SNAREs transport vesicles along microtubules.
• D. Endocytosis deactivates SNARE proteins; calcium has no role.

Answer: (A)