The short version of pentadecapeptide fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2026-04-22 and is reviewed periodically as new material appears.
BPC-157 is a synthetic peptide of fifteen amino acids, written as GEPPPGKPADDAGLV, whose sequence matches part of a larger protein identified in human gastric juice. That parent protein was described in stomach-secretion research, and the fifteen-residue fragment was named body protection compound, which gives the peptide its common label. Material used in experiments is produced by solid-phase peptide synthesis rather than extracted from tissue. The reported molecular weight is about 1419 daltons, and the chain contains several proline residues, a feature that appears in discussions of its resistance to enzymatic breakdown.
Most published findings come from rodent models, where the peptide has been examined in wound-healing, gastrointestinal-lesion, tendon, and vascular-injury preparations. A smaller number of early human studies have been reported, chiefly in inflammatory bowel conditions, but the public record is short and has not led to marketing approval in the United States or the European Union. Reviewers therefore classify the compound as investigational, and whether animal results carry over to people remains an open question rather than a settled one.
BPC-157 is a synthetic fifteen-amino-acid peptide whose sequence is GEPPPGKPADDAGLV. Its name derives from the phrase body protection compound, a term applied to a protein fraction originally detected in human gastric juice. The short peptide is not that full protein; it corresponds to a stable fragment of the larger molecule. Researchers frequently describe it as a pentadecapeptide because it contains exactly fifteen residues. Its neutral molecular mass is approximately 1419 daltons.
The sequence places several glycine and proline residues near the middle, which may influence how the chain folds in solution. The peptide is linear rather than cyclic, and it carries no disulfide bridges. Commercial material is commonly supplied as the acetate salt, although the free base and other counterion forms also appear. Because the term BPC-157 refers to a specific sequence, samples with slight sequence variants are chemically different substances. Published work generally treats the fifteen-residue sequence as the defining structure.
| Property | Value | Notes |
|---|---|---|
| Origin | Fragment of a protein found in human gastric juice | Sequence corresponds to a fifteen-residue portion of the parent protein |
| Sequence | GEPPPGKPADDAGLV | Single linear chain, fifteen amino acids |
| Reported molecular weight | About 1419 daltons | Value quoted consistently in supplier and review literature |
| Regulatory status | Not an approved human medicine in the US or EU | Handled and sold as a research chemical |
| Sports status | Listed as prohibited | Falls under non-approved-substance categories in anti-doping codes |
BPC-157 is a synthetic peptide built from fifteen amino acid residues. Its sequence comes from a larger protein fragment that researchers isolated from human gastric juice and described as a body protection compound. The fragment contains glycine, glutamic acid, five prolines, lysine, alanine, two aspartic acids, leucine, and valine. The number 157 in the name refers to the position of the stretch within the parent protein. Material used in laboratories is manufactured rather than extracted from stomach fluid.
The molecule carries 15 residues, a molar mass near 1419.5 g/mol, and the formula C62H98N16O22. Its structure features a proline-rich central region, a pair of adjacent aspartic acid residues, and no cysteine. The absence of cysteine means no disulfide bonds can form, which simplifies refolding and reconstitution. Suppliers usually ship the material as a freeze-dried powder that appears white to off-white. It dissolves readily in water and in saline solutions.
Most early work on this peptide originated in the 1990s from a research group in Zagreb, Croatia, relying on animal models and cell cultures. Reported observations included effects on gastrointestinal lesion healing, tendon fibroblast migration, and blood vessel formation under controlled laboratory conditions. These findings come predominantly from rodent studies and in vitro assays rather than from human trials. Controlled human data remain limited, and the degree to which animal results translate to human physiology is an open question rather than a settled fact.
Within the research literature, the peptide is discussed through several provisional mechanisms, including cytoprotection, modulation of growth factor signaling, and interaction with the nitric oxide system. None of these mechanisms is fully characterized, and no single pathway is universally accepted. Review articles typically note the gap between consistent animal findings and sparse human evidence. The compound is classified as a research chemical rather than an approved pharmaceutical, which shapes how studies are designed, funded, and reported.
=== Lead poisoning === Magnesium sulfate was historically used as a treatment for lead poisoning. Prior to the development of chelation therapy, cases of accidental lead ingestion were often immediately treated with magnesium sulfate, which would cause the lead to be precipitated out and, with a high enough dose, literally purged from the digestive system as insoluble lead(II) sulfate. In this application, magnesium sulfate saw particular use in veterinary medicine of the early-to-mid 20th century; Epsom salt was already available on many farms for agricultural purposes, and it was often prescribed in the treatment of farm animals which inadvertently ingested lead.
August 5: The Partial Test Ban Treaty is signed by the US, UK and USSR, prohibiting the testing of nuclear weapons anywhere except underground. September 16: Malaysia was formed, with Tunku Abdul Rahman as its first prime minister. This was considered to have violated the Manila Accord because Malaysia was formed before the Sabah and Sarawak self-determination election results were reported. September 25: A border war was fought between Morocco and Algeria. October 14: The Aden Emergency begins against British rule. November 2: South Vietnamese President Ngo Dinh Diem is assassinated in a coup supported by the CIA. November 22: John F. Kennedy is shot and killed in Dallas. There has been some speculation over whether communist countries, or even the CIA, were involved in the assassination, but those theories remain controversial. Kennedy's vice-president Lyndon B. Johnson becomes President of the United States. December 12: Kenya becomes independent from the UK under Commonwealth status.
=== Detroit riots === The Detroit Race Riot of 1943 broke out in Detroit in June of that year and lasted three days before Federal troops regained control. The rioting between blacks and whites began on Belle Isle, Detroit's largest park, on June 20, 1943, and continued until June 22, killing 34, wounding 433, and destroying property valued at $2 million. This was one of Detroit's worst riots, with the buildup of racial tension and animosity between blacks and whites culminating in brawls that broke out on the bridge connecting Belle Isle to southeast Detroit. Fierce attacks were launched on each other's property, including the looting of both black and white-owned stores and white rampages throughout Paradise Valley, a segregated section of Detroit that was predominantly black and very poorly maintained. As racial tensions escalated between blacks and whites, the gravity of the consequences of these tensions also escalated. Violence and riots were common, especially regarding housing situations, as blacks began encroaching on predominantly white neighborhoods. In 1955, the black Wilson family bought a home in a white neighborhood, and soon faced vandalism and property destruction. Angry demands and threats were made at the Wilson family, harassing them to move out. Again, the Detroit police officers rarely did anything to help, choosing instead to sit in their cars nearby despite the constant harassment of the Wilsons. The summer of 1967 saw five days of riots in Detroit. Forty-three people died, 33 were black, and ten were white.
Sources: en.wikipedia.org
Moving outwards away from the hydrophobic core region and into the interfacial hydrophilic region, the effective concentration of water rapidly changes across this boundary layer, from nearly zero to a concentration of around 2 M. The phosphate groups within phospholipid bilayers are fully hydrated or saturated with water and are situated around 5 Å outside the boundary of the hydrophobic core region. Some water-soluble proteins associate with lipid bilayers irreversibly and can form transmembrane alpha-helical or beta-barrel channels. Such transformations occur in pore forming toxins such as colicin A, alpha-hemolysin, and others. They may also occur in BcL-2 like protein , in some amphiphilic antimicrobial peptides , and in certain annexins . These proteins are usually described as peripheral as one of their conformational states is water-soluble or only loosely associated with a membrane.
A non-Newtonian liquid is one where the viscosity is not independent of these factors and either thickens (increases in viscosity) or thins (decreases in viscosity) under shear. Examples of non-Newtonian liquids include ketchup, custard, or starch solutions.
The US Federal Aviation Administration issued a notice to airmen on 3 January 2026 prohibiting US aircraft from operating within Venezuelan airspace, citing "ongoing military activity". The US Embassy in Caracas issued a shelter-in-place order from its relocated operations in Colombia. The southern area of Caracas reportedly lost power. Republican Senator Mike Lee said that Secretary of State Marco Rubio "anticipates no further action in Venezuela now that Maduro is in US custody," and that Maduro was expected to go on trial in the US. In the hours after the US attack, Rubio placed a call with Delcy and Jorge Rodríguez, as well as Mauricio Claver-Carone, who was involved in the plan to abduct Maduro and would go on to serve as an unofficial viceroy for the Trump administration in Venezuela. In a television interview with ABC News, Rubio thanked news organizations who had received leaks about the operation before it took place for not reporting on it. According to Semafor, The New York Times and The Washington Post had received information about the attack but did not report on it in order to not endanger the lives of US personnel involved in the operation. The acknowledgment of the media withholding information about the operation came after defense secretary Pete Hegseth imposed strict restrictions on Pentagon reporters due to a mistrust of journalists' abilities to withhold militarily sensitive information from the public.
Sources: en.wikipedia.org
It is not approved for human use in the United States or the European Union. Clinical material has been studied in a small number of early trials, mainly for inflammatory bowel conditions, and the compound remains investigational. Regulators treat marketed products as unapproved rather than as authorized drugs.
The peptide was named after a protein fraction found in human gastric juice, and the shorter form was called body protection compound. That phrase was shortened to the abbreviation BPC. The number 157 refers to a laboratory designation used in the original isolation work.
Its sequence corresponds to a segment of a protein present in gastric secretions, but the material supplied for research is made synthetically. No commercial product is purified from human or animal tissue. The synthetic route is used because it gives a defined chain length and a reproducible sequence.
The letters BPC stand for body protection compound. The number 157 refers to a specific fragment designation from early work on gastric proteins. The full name is a label for a synthetic fifteen-amino-acid peptide rather than a naturally isolated drug.