Browse and search the complete peptide encyclopedia. 17 compounds and counting.
17 results
Nonapeptide
Delta Sleep-Inducing Peptide (DSIP) is a naturally occurring nonapeptide first isolated from rabbit brain tissue in 1977. It is one of the most studied sleep-related peptides and has been the subject of both animal and human research for decades.
Pentadecapeptide (15 amino acids)
BPC-157 is a synthetic pentadecapeptide derived from a protective protein found in human gastric juice. It has been extensively studied in animal models for tissue repair research.
Peptide fragment (43 amino acids in full Tβ4)
TB-500 is a synthetic version of the naturally occurring peptide Thymosin Beta-4 (Tβ4), which is found in virtually all human and animal cells and plays a role in cell migration and tissue repair.
Tripeptide
KPV is a naturally occurring tripeptide derived from alpha-melanocyte-stimulating hormone (α-MSH). It is one of the smallest peptides studied for its anti-inflammatory properties.
Tripeptide-copper complex
GHK-Cu is a naturally occurring copper-binding tripeptide found in human plasma, saliva, and urine. Its concentration decreases significantly with age, making it one of the most studied peptides in aging research.
Tetrapeptide
Epithalon is a synthetic tetrapeptide based on the natural peptide epithalamin, which is produced by the pineal gland. It is one of the Khavinson bioregulator peptides and is studied primarily for its effects on telomerase activity.
Heptapeptide
Selank is a synthetic heptapeptide developed at the Institute of Molecular Genetics of the Russian Academy of Sciences. It is a derivative of the naturally occurring immunomodulatory peptide tuftsin with an added Pro-Gly-Pro sequence for stability.
Heptapeptide
Semax is a synthetic heptapeptide derived from ACTH (adrenocorticotropic hormone) fragments 4-7, with an added Pro-Gly-Pro stabilizing tail. Developed in Russia for cognitive and neurological research.
Cyclic heptapeptide
PT-141 (Bremelanotide) is a synthetic cyclic peptide analog of alpha-melanocyte-stimulating hormone (α-MSH). It activates melanocortin receptors, particularly MC3R and MC4R in the central nervous system.
GLP-1 receptor agonist (modified peptide)
Semaglutide is a long-acting glucagon-like peptide-1 (GLP-1) receptor agonist developed by Novo Nordisk. It is one of the most-prescribed peptide medications in the world.
Mitochondrial-derived peptide (16 amino acids)
MOTS-c is a mitochondrial-derived peptide encoded by the 12S rRNA gene in mitochondrial DNA. Discovered in 2015 by Dr. Changhan Lee's lab at USC, it is the first mitochondrial-encoded peptide shown to act as a signaling molecule regulating metabolism.
Tetrapeptide (modified)
SS-31 (Elamipretide) is a synthetic tetrapeptide that selectively targets cardiolipin in the inner mitochondrial membrane. It is one of the most clinically advanced mitochondria-targeted peptides.
Polypeptide (28 amino acids)
Thymosin Alpha-1 is a naturally occurring polypeptide first isolated from thymic tissue (the thymus gland). It has been approved as a pharmaceutical product in over 35 countries for immune modulation.
Antimicrobial peptide (37 amino acids)
LL-37 is the only human cathelicidin antimicrobial peptide. It is produced by immune cells, epithelial cells, and keratinocytes and plays a crucial role in innate immunity.
Dual GIP/GLP-1 receptor agonist (39 amino acids)
Tirzepatide is a first-in-class dual glucose-dependent insulinotropic polypeptide (GIP) and GLP-1 receptor agonist developed by Eli Lilly. It represents a new paradigm in metabolic peptide therapeutics.
Nonapeptide (cyclic)
Oxytocin is a naturally occurring nonapeptide hormone produced by the hypothalamus and released by the posterior pituitary gland. It is one of the most well-known and extensively studied peptides in neuroscience.
Polypeptide (28 amino acids)
VIP is a widely distributed neuropeptide found throughout the central and peripheral nervous systems, as well as the gut. It belongs to the secretin/glucagon superfamily.