Syntaxin 1A, Brain (STX1A)

Syntaxin-1A is a protein encoded by the STX1A gene.Synaptic vesicles store neurotransmitters that are released during calcium-regulated exocytosis. The specificity of neurotransmitter release requires the localization of both synaptic vesicles and calcium channels to the presynaptic active zone.

Syntaxins function in this vesicle fusion process. Syntaxins also serve as a substrate for botulinum neurotoxin type C, a metalloprotease that blocks exocytosis and has high affinity for a molecular complex that includes the alpha-latrotoxin receptor which produces explosive exocytosis .Alternatively spliced transcript variants encoding different isoforms have been found for this gene.