Peptable

Comparison

MOTS-c vs Selank

Also see:

MOTS-cSelank

Function

While MOTS-c improves insulin sensitivity, enhances glycolysis, reduces oxidative stress, and shows protective effects in models of metabolic syndrome, aging, and ischemia-reperfusion injury8135146, 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.

Mechanism

While MOTS-c works as a 16-amino-acid mitochondrial-derived peptide that translocates to the nucleus under metabolic stress and regulates glucose and lipid metabolism largely via activation of AMPK and modulation of mTOR and folate-cycle–linked pathways854140146, 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.

Receptor

MOTS-c

No dedicated cell-surface receptor has been definitively identified; signaling is primarily described via intracellular AMPK and related metabolic pathways8135146

Selank

Not clearly established in the current dataset.

Organism or Origin

MOTS-c

Human mitochondrial peptide encoded in the 12S rRNA gene region54146

Selank

Synthetic analog of the IgG-derived tetrapeptide tuftsin39

Gene

MOTS-c

MT-RNR1

Selank

Not assigned in the current dataset.

Summary

MOTS-c and Selank are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: MOTS-c is more often discussed in the realm of Metabolic and endocrine and Aging and longevity, 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 MOTS-c tracking more closely to Mitochondrial membrane while Selank centers more on GPCR receptor. MOTS-c has a more mitochondrial-encoded origin, while Selank is closer to synthetic analog background with MOTS-c in Preclinical development and Selank approved for Research use only. Their sequence patterns also diverge, with MOTS-c showing hydrophobic domain features and Selank showing proline-rich features.

Related articles

No related articles are linked to these peptides yet.

Sources

8Mitochondrial-encoded peptide MOTS-c prevents pancreatic islet ..., https://www.nature.com/articles/s12276-025-01521-1
54MOTS-c - Wikipedia, https://en.wikipedia.org/wiki/MOTS-c
135MOTS-c Promotes Glycolysis via AMPK-HIF-1α-PFKFB3 ... - PubMed, https://pubmed.ncbi.nlm.nih.gov/40035775/
146MOTS-c: A promising mitochondrial-derived peptide for therapeutic ..., https://pmc.ncbi.nlm.nih.gov/articles/PMC9905433/
39Application of thr-lys-pro-arg-pro-gly-pro peptide (selank) for ..., https://patents.google.com/patent/RU2629832C1/en