Comparison

Snap-8 vs SS-31

Function

While Snap-8 is a cosmetic peptide studied for reducing wrinkle depth by inhibiting synaptic vesicle fusion and subsequent muscle contraction in facial expression muscles5060, SS-31 improves mitochondrial bioenergetics, reduces oxidative stress, and shows protective effects in models of ischemia-reperfusion, neurodegeneration, and other mitochondrial disorders4637137.

Mechanism

While Snap-8 works as acetyl octapeptide-3 (Ac-Glu-Glu-Met-Gln-Arg-Arg-Ala-Asp-NH2), an extended analog of Argireline derived from the N-terminal region of SNAP-25 that competes with native SNAP-25 for binding to syntaxin-1, forming a non-functional SNARE complex and reducing neurotransmitter release5060, SS-31 is a mitochondria-targeted tetrapeptide, d-Arg-dimethylTyr-Lys-Phe-NH2, that selectively binds cardiolipin in the inner mitochondrial membrane, stabilizing cristae structure, improving electron transport, and reducing ROS production4637137143.

Length and Sequence

Snap-8 is 8 amino acids long, whereas SS-31 is shorter as it has a length of 4 amino acids. Snap-8 is made up of a sequence of Glutamic acid, Glutamic acid, Methionine, Glutamine, Arginine, Arginine, Alanine, Aspartic acid. SS-31 is made up of a sequence of Arginine, dimethylTyr, Lysine, Phenylalanine.

Receptor

Snap-8

Targets the SNARE complex (SNAP-25–syntaxin interaction) rather than a cell-surface receptor5060

SS-31

Cardiolipin-rich inner mitochondrial membrane; interacts with cardiolipin and associated mitochondrial proteins rather than a classical cell-surface receptor46137143

Organism or Origin

Snap-8

Fully synthetic SNAP-25–derived peptide used in topical anti-wrinkle products5060

SS-31

Fully synthetic Szeto–Schiller tetrapeptide; not encoded in the genome4637

Gene

Snap-8

Not assigned in the current dataset.

SS-31

Not assigned in the current dataset.

Related articles

No related articles are linked to these peptides yet.

Sources

50SNAP-8 (Acetyl Octapeptide-3) Peptide Overview - Kimera Chems, https://kimerachems.co/product/snap-8-acetyl-octapeptide-3/
60SNAP-8 (Acetyl Octapeptide-3): The Topical Anti-Wrinkle | FormBlends, https://formblends.com/research/specialty/snap8-anti-aging-peptide
46Discovery of novel SS-31 (d-Arg-dimethylTyr-Lys-Phe-NH2 ... - PMC, https://pmc.ncbi.nlm.nih.gov/articles/PMC11409442/
56Discovery of novel SS-31 (d-Arg-dimethylTyr-Lys-Phe-NH2 ..., https://pubs.rsc.org/en/content/articlelanding/2024/ra/d4ra05517a
137Mitochondrial protein interaction landscape of SS-31 | PNAS, https://www.pnas.org/doi/10.1073/pnas.2002250117
143SS-31 Peptide: Mitochondrial Repair for Energy and Longevity, https://revolutionhealth.org/blogs/news/peptide-therapy-ss-31