SNAP-8, also known as acetyl glutamyl heptapeptide-1, is a synthetic peptide studied in vitro. Composed of 8 amino acids, SNAP-8 is based on the N-terminal sequence of the SNAP-25 peptide, a protein involved in the SNARE complex and vesicle fusion machinery.

SNARE Complex Mechanism Research

Research has examined the multifaceted role of SNARE proteins in membrane fusion, including how SNAP-25 and related proteins assemble into the core complex that drives vesicle docking and fusion at the cell membrane.¹

Molecular Modeling of Synaptotagmin-SNARE Inhibition

Computational molecular modeling research has examined the mechanism by which SNAP-25-derived peptides inhibit synaptotagmin-SNARE interactions, elucidating a plausible structural basis for how peptides of this class interfere with SNARE-complex assembly at the molecular level.²

Peptide Design: Extending the Argireline Sequence

SNAP-8's eight-residue sequence extends the six-residue sequence of acetyl hexapeptide-8 (commercially known as Argireline) by adding two additional C-terminal residues, alanine and aspartate, both drawn from the corresponding positions in native SNAP-25.

Researchers studying structure-activity relationships in this peptide class have examined whether this extension toward the native SNAP-25 sequence corresponds to changes in SNARE-complex binding behavior relative to the shorter hexapeptide, since both fragments compete with the same region of the full-length protein for incorporation into the complex.

Analytical Purity Verification

As with other synthetic peptides bearing an acetylated N-terminus and amidated C-terminus, SNAP-8 purity is typically verified using combined HPLC and mass spectrometry to confirm correct sequence assembly and both terminal modifications, since incomplete acetylation or amidation would alter the peptide's resistance to enzymatic degradation without necessarily being obvious from mass alone.

Storage and Handling in the Laboratory Setting

Lyophilized SNAP-8 is stored under sub-zero freezer conditions to preserve integrity between experimental sessions, consistent with standard handling practices for short synthetic peptides used in cell-based SNARE-interaction assays.

Comparative Research Context Among SNAP-25-Derived Peptides

SNAP-8 is studied alongside other synthetic fragments derived from the SNAP-25 protein, including the shorter N-terminal analog Argireline.

Researchers comparing these SNAP-25-derived peptides have focused on how fragment length corresponds to differences in their studied interference with SNARE complex assembly, a comparative framework that continues to inform experimental design in laboratory research on synthetic SNARE-modulating peptides.

Important Notice

SNAP-8 is intended exclusively for in vitro laboratory research and must not be used on humans under any circumstances. This product is not approved for any human use, and has not been evaluated for safety or efficacy in humans.

Product Information

Blue Sky Peptide's SNAP-8 is available in a lyophilized white powder form with a concentration of 10 mg per vial.

References

1. Han J, Pluhackova K, Bockmann RA. The Multifaceted Role of SNARE Proteins in Membrane Fusion. Front Physiol. 2017;8:5.
2. Wongrattanakamon P, Nimmanpipug P, Sirithunyalug B, Jiranusornkul S. Molecular modeling elucidates the cellular mechanism of synaptotagmin-SNARE inhibition: a novel plausible route to anti-wrinkle activity of botox-like cosmetic active molecules. Mol Cell Biochem. 2018;442:97-109.