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 SS-31 improves mitochondrial bioenergetics, reduces oxidative stress, and shows protective effects in models of ischemia-reperfusion, neurodegeneration, and other mitochondrial disorders4637137, Thymosin Alpha-1 is clinically used in some countries as an immunomodulator for chronic hepatitis B/C and as an adjuvant in cancer therapy, enhancing cell-mediated immunity41487.
While SS-31 works as 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, Thymosin Alpha-1 is a 28-amino-acid thymic peptide fragment of prothymosin alpha that activates dendritic cells and T cells primarily via TLR9/MyD88/NF-κB signaling, enhancing Th1 responses and NK-cell cytotoxicity414.
SS-31
Thymosin Alpha-1
Toll-like receptors, predominantly TLR9 (and also TLR2/TLR3) on plasmacytoid dendritic cells and other immune cells4
SS-31
Not assigned in the current dataset.
Thymosin Alpha-1
PTMA
The clearest overlap between SS-31 and Thymosin Alpha-1 is that both converge around Signaling modulator. Their typical research and application settings separate fairly clearly: SS-31 is more often discussed in the realm of Aging and longevity and Cardiovascular health, whereas Thymosin Alpha-1 is more often associated with the realm of Immunology and inflammation and Oncology. Both appear to work through Signaling modulator, but the functional emphasis still separates, with SS-31 leaning toward Mitochondrial function modulation, Antioxidant activity, and Neuroprotection and cognition and Thymosin Alpha-1 leaning toward Immune regulation and Anti-inflammatory. SS-31 has a more synthetic design origin, while Thymosin Alpha-1 is closer to natural endogenous background and their development context also differs, with SS-31 in Clinical phase 2 while Thymosin Alpha-1 is approved. SS-31 carries d-amino acid substitution and amidation features, while Thymosin Alpha-1 instead reflects acetylation changes, while their sequence patterns also diverge, with SS-31 showing cationic amphipathic features and Thymosin Alpha-1 showing protein-mimetic sequence features.
No related articles are linked to these peptides yet.