A living catalog of notable peptides

Glucose regulation

Social bonding, labor

Insulin secretion, appetite signaling

Long-acting GLP-1 receptor agonist

Studied in rodent models of tendon, muscle, ligament, gut and skin injury; proposed angiogenic and nitric-oxide-related mechanisms

N-acetylated 7-residue fragment of thymosin β4's actin-binding motif; in-vitro research, with rodent tendon findings for vendor-labelled material of uncharacterized sequence

GHRH(1-29) analogue designed to bind serum albumin after injection, sustaining growth hormone and IGF-1 release for days

Selective ghrelin receptor (GHS-R1a) agonist that releases growth hormone without raising ACTH or cortisol

Oral ghrelin mimetic / GH secretagogue

Non-selective melanocortin agonist: MC1R-driven skin pigmentation, MC4R-mediated erectile and appetite effects

Non-selective melanocortin agonist (MC3/MC4-mediated central effects on sexual desire)

Copper-binding tripeptide studied in skin biology

Mitochondrial-encoded signalling peptide that regulates metabolic homeostasis and, under stress, moves to the nucleus to change gene expression

Heptapeptide analogue of the immunomodulatory tetrapeptide tuftsin, studied for anxiolytic and nootropic effects

ACTH(4-7) analogue studied as a neuroprotective / nootropic peptide, mainly in Russian research

Pain transmission

Immune defense

Immunosuppression

Water retention, vasoconstriction

Appetite & GH release signaling

GLP-1 receptor agonist

Somatostatin receptor agonist — suppresses growth hormone, thyrotropin and gut-hormone secretion

Potent vasoconstrictor and effector of the renin-angiotensin-aldosterone system

Inhibits GH, insulin, glucagon