The Architecture of the Presynaptic Release Site.-Cytomatrix Proteins in Presynaptic Terminal. - Multiple Modes of Fusion and Retrieval at the Calyx of Held Synapse -- Roles of SNARE Proteins in Synaptic Vesicle Fusion -- Calcium Sensors of Neurotransmitter Release. - Roles and Sources of Calcium in Synaptic Exocytosis -- Regulation of Presynaptic Calcium Channels -- Roles of mUnc13/UNC-13 and mUnc18/UNC-18 in Neurotransmitter Release. - The role of tomosyn in the regulation of neurotransmitter exocytosis. -Roles of complexins in Neurotransmitter Release. -Regulation of Neurotransmitter Release by AIPR-1/AIP and calstabins. - The Role of Potassium Channels in the Regulation of Neurotransmitter Release -- Roles of Neuropeptides in Synaptic Function. - Transsynaptic Regulation of Presynaptic Release Machinery in Central Synapses by Cell Adhesion Molecules. - Lipids and Secretory Vesicle Exocytosis -- Synaptic Vesicle Endocytosis.