SNAP-8, or acetyl octapeptide-3, is a synthetic peptide derived from the N-terminal sequence of SNAP-25 — a protein component of the SNARE complex that is involved in vesicle fusion and neurotransmitter release at neuromuscular junctions. Research interest in SNAP-8 centers on its apparent ability to compete with SNAP-25 in SNARE complex assembly, which has made it a research tool in studies examining acetylcholine release mechanisms and neuromuscular signaling.

Studies have investigated SNAP-8 in cell culture and ex-vivo models examining how SNARE protein competition influences vesicle-mediated neurotransmitter secretion. The peptide's mechanism of action — interfering with the SNARE complex at the pre-synaptic level — offers a distinct pharmacological probe compared to enzyme-based approaches, and has attracted interest in both basic neuroscience and applied skin biology research.

In dermatological research models, SNAP-8 has been explored in the context of skin cell signaling and muscle contraction-related pathways in facial tissue, where SNARE complex activity is studied in relation to dynamic lines and expression-related changes at the tissue level.

myPEPT supplies SNAP-8 at ≥99% verified purity with a Certificate of Analysis from independent lab testing. Shipped across the EU in research-grade packaging.

What researchers should know: SNAP-8 is a research peptide supplied for laboratory use only. It is not a finished cosmetic ingredient or therapeutic product in this format. Handle and store according to your institution's protocols for synthetic peptide research compounds.