molecular-biology
SNARE Complex
Definition
The SNARE (Soluble N-ethylmaleimide-sensitive factor Attachment protein REceptor) complex is a protein machinery essential for membrane fusion events including neurotransmitter release at synaptic junctions. The core complex consists of vesicle-associated v-SNAREs (synaptobrevin/VAMP) and target membrane t-SNAREs (syntaxin and SNAP-25) that assemble into a four-helix bundle to drive vesicle-membrane fusion. In dermatological research, peptides such as SNAP-8 (acetyl octapeptide-3) have been designed to competitively inhibit SNARE complex formation, thereby reducing neurotransmitter release at neuromuscular junctions and attenuating expression lines.