Synaptic vesicle exocytosis is a critical process for neurotransmitter release, regulated by a complex molecular machinery. Key proteins involved include SNAREs, synaptotagmins, complexins, Munc18, and Munc13. SNAREs, such as syntaxin 1, synaptobrevin (VAMP), and SNAP-25, form a complex that drives membrane fusion. Synaptotagmins act as calcium sensors, triggering fusion by binding to SNAREs and membranes. Complexins regulate the timing of fusion by either promoting or inhibiting the process. Munc18 and Munc13 are involved in preparing the SNARE complex for assembly and priming. Despite significant progress, the exact molecular mechanisms and the precise sequence of events in exocytosis remain unclear. Recent studies suggest that SNAREs undergo a regulated assembly-disassembly cycle, with Munc18 and Munc13 playing key roles in this process. Calcium influx triggers the release of neurotransmitters by activating the SNARE complex and facilitating membrane fusion. The interplay between proteins and lipids is crucial for the fusion process, with various models explaining the role of calcium in triggering exocytosis. The molecular basis of synaptic exocytosis continues to be a topic of intense research, with new insights emerging from advanced imaging and biochemical techniques.Synaptic vesicle exocytosis is a critical process for neurotransmitter release, regulated by a complex molecular machinery. Key proteins involved include SNAREs, synaptotagmins, complexins, Munc18, and Munc13. SNAREs, such as syntaxin 1, synaptobrevin (VAMP), and SNAP-25, form a complex that drives membrane fusion. Synaptotagmins act as calcium sensors, triggering fusion by binding to SNAREs and membranes. Complexins regulate the timing of fusion by either promoting or inhibiting the process. Munc18 and Munc13 are involved in preparing the SNARE complex for assembly and priming. Despite significant progress, the exact molecular mechanisms and the precise sequence of events in exocytosis remain unclear. Recent studies suggest that SNAREs undergo a regulated assembly-disassembly cycle, with Munc18 and Munc13 playing key roles in this process. Calcium influx triggers the release of neurotransmitters by activating the SNARE complex and facilitating membrane fusion. The interplay between proteins and lipids is crucial for the fusion process, with various models explaining the role of calcium in triggering exocytosis. The molecular basis of synaptic exocytosis continues to be a topic of intense research, with new insights emerging from advanced imaging and biochemical techniques.