Acetyl tetrapeptide-5
is used in cosmetic eye formulations to decrease puffiness, eye bags, and dark circles by reducing edema and protecting proteins such as SOD from glycation
Alanine
Ala / A · hydrophobic residue · neutral charge
AOD-9604
is studied as an anti-obesity peptide that can reduce weight gain and increase fat oxidation in obese animal models with generally neutral effects on IGF-1 and glucose metabolism in early human trials
Arginine
Arg / R · basic residue · positive charge
Argireline
is a topical cosmetic peptide reported to decrease dynamic wrinkles by partially mimicking the mechanism of botulinum toxin in a non-invasive manner
Asparagine
Asn / N · polar residue · neutral charge
Aspartic acid
Asp / D · acidic residue · negative charge
BPC-157
is investigated for accelerating healing of gastrointestinal mucosa, tendons, ligaments, bone, and nervous tissue in preclinical models, with anti-inflammatory and pro-angiogenic effects
Comparison
While Exenatide is used for type 2 diabetes treatment to improve glycemic control and modestly reduce body weight through GLP-1–like insulinotropic and glucagonostatic effects6768, Selank is a peptide developed in Russia as an anxiolytic and nootropic; in animal models it reduces anxiety-like behavior and modulates immune parameters under stress39.
While Exenatide works as a 39-amino-acid exendin-4 peptide originally isolated from Gila monster venom that acts as a long-acting GLP-1 receptor agonist resistant to DPP-4 degradation67, Selank is a synthetic heptapeptide, Thr-Lys-Pro-Arg-Pro-Gly-Pro, that combines a tuftsin fragment with a Pro-Gly-Pro motif and is reported to modulate GABAergic neurotransmission and cytokine balance while being resistant to proteolytic degradation39.
Exenatide
Not assigned in the current dataset.
Selank
Not assigned in the current dataset.
Exenatide and Selank are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: Exenatide is more often discussed in the realm of Metabolic and endocrine, whereas Selank is more often associated with the realm of Neurology and brain health and Immunology and inflammation. They also influence different molecular systems, with Exenatide tracking more closely to GLP-1 receptor while Selank centers more on GPCR receptor. Exenatide has a more venom-derived origin, while Selank is closer to synthetic analog background and their development context also differs, with Exenatide approved while Selank is approved for Research use only. Exenatide incorporates amidation features that are not part of Selank, while their sequence patterns also diverge, with Exenatide showing alpha-helical domain features and Selank showing proline-rich features.