SNCA Protein, Mouse

SNCA protein, a pivotal player in synaptic activity, performs diverse roles in the regulation of synaptic vesicle trafficking and neurotransmitter release. It functions as a monomer in synaptic vesicle exocytosis, enhancing processes such as vesicle priming, fusion, and dilation of exocytotic fusion pores. Additionally, SNCA acts as a molecular chaperone when in its multimeric membrane-bound state, assisting in the folding of synaptic fusion components known as SNAREs at the presynaptic plasma membrane. This chaperone activity is vital for maintaining normal SNARE-complex assembly during aging. SNCA also contributes to the regulation of dopamine neurotransmission by interacting with the dopamine transporter (DAT1) and modulating its activity. Existing as both a soluble monomer and homotetramer, SNCA dynamically balances tetramers and monomers, with the tetramer playing a crucial role in homeostasis. SNCA engages in various interactions with proteins such as UCHL1, synphilin-1/SNCAIP, CALM1, STXBP1, VAMP2, SNAP25, RPH3A, RAB3A, SERF1A, and SEPTIN4, illustrating its involvement in complex molecular networks governing synaptic function and integrity.