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 2026-07-31 and is reviewed periodically as new material appears.
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.
Physical descriptions in supplier documents and papers usually list the compound as a white to off-white powder. It dissolves readily in water and in common aqueous buffers, and solutions are often prepared fresh before an experiment. Molecular mass near 1419 daltons helps verify identity during mass spectrometry. The powder is somewhat hygroscopic, so moisture exposure can alter the measured mass of a sample. Purity is typically reported as a percentage from chromatographic analysis.
Supplied material is typically a lyophilized white to off-white powder. The peptide is freely soluble in water and in common aqueous buffers, which allows it to be handled as a stock solution. Because the sequence contains no cysteine, disulfide cross-linking is not a route of degradation. The absence of aromatic residues means ultraviolet absorbance at 280 nm is minimal, so quantification usually relies on peptide bond absorbance near 214 nm or on amino acid analysis.
Common synonyms in catalogs include pentadecapeptide BPC 157, BPC157, and the full sequence name. A CAS registry number in the 137525-51-0 range is frequently listed, though the assignment should be verified against the supplier certificate of analysis. The name itself is not a pharmacopoeial designation, and there is no standardized international nonproprietary name. Distinguishing genuine material from related fragments generally requires mass spectrometry, since several truncated sequences share similar chromatographic behavior.
| Property | Value | Notes |
|---|---|---|
| Molecular formula | C62H98N16O22 | Approximate, for sequence GEPPPGKPADDAGLV |
| Molecular mass | ~1419 Da | Neutral form |
| Appearance | White to off-white powder | Lyophilized solid |
| Solubility | Soluble in water | Also soluble in aqueous buffers |
| Typical storage | -20 C | Dry powder, protected from moisture |
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.
Published storage guidance follows general peptide practice rather than product-specific studies. The dry powder is typically kept at minus 20 degrees Celsius, away from light and moisture. Once reconstituted, solutions are generally refrigerated and used over days to weeks, because the aqueous environment slowly promotes hydrolysis and oxidation. Long-term data on degradation rates or breakdown products are sparse. Stated shelf lives from different producers vary widely, reflecting the absence of a shared reference standard.
Laboratory research on this peptide has examined a wide and heterogeneous set of endpoints, including gastric ulcer models, tendon and ligament injury, wound closure, and intestinal inflammation. Most published findings come from rodent studies, and reported effect sizes are often large relative to controls. Because the compound has been tested across many unrelated injury models, the literature is frequently described as unusually broad for a single peptide. A substantial share of this work originates from a small number of research groups, which matters when assessing how widely results have been reproduced.
Evidence in humans is limited. Small clinical studies have examined the peptide in contexts such as ulcerative colitis and wound healing, but participant numbers are small and independent replication is scarce. It is not approved as a medicine by major regulatory agencies and is distributed mainly as a research material or compounded preparation. Long-term human safety data are not established, and questions about absorption through non-injected routes remain open rather than resolved. Claims about its effects are best read against these gaps.
BPC-157 is a synthetic peptide of fifteen amino acids, written in single-letter code as GEPPPGKPADDAGLV. The sequence corresponds to a partial fragment of a protein isolated from human gastric juice, described in early reports as body protection compound. The number 157 refers to a fragment designation in that work rather than to molecular mass. Initial descriptions appeared in the early 1990s, when the fragment was reported to protect gastrointestinal tissue in animal models. Commercial material is produced by solid-phase peptide synthesis rather than extracted from biological sources.
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.
BPC-157 is a synthetic pentadecapeptide with the sequence GEPPPGKPADDAGLV, corresponding to a partial fragment of a larger protein detected in human gastric juice. The name derives from the parent protein designation BPC, an abbreviation of body protection compound, with 157 acting as a fraction or batch identifier used by the original investigators. Its molecular weight is approximately 1419 daltons, and the chain contains no unusual residues or disulfide bridges. In the literature it is described as a short, water-soluble fragment rather than a complete natural protein.
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.
In vacuum applications, a cold trap is a device that condenses all vapors except the permanent gases (hydrogen, oxygen, and nitrogen) into a liquid or solid. The most common objective is to prevent vapors being evacuated from an experiment from entering a vacuum pump where they would condense and contaminate it. Particularly large cold traps are necessary when removing large amounts of liquid as in freeze drying. Cold traps also refer to the application of cooled surfaces or baffles to prevent oil vapours from flowing from a pump and into a chamber. In such a case, a baffle or a section of pipe containing a number of cooled vanes, will be attached to the inlet of an existing pumping system. By cooling the baffle, either with a cryogen such as a dry ice mixture, or by use of an electrically driven Peltier element, oil vapour molecules that strike the baffle vanes will condense and thus be removed from the pumped cavity.
After his release from jail, Colonel Rhodes immediately joined his brother Cecil and the British South Africa Company in the Second Matabele War taking place just north of the Transvaal in Matabeleland. Cecil Rhodes was forced to resign as Prime Minister of Cape Colony in 1896 due to his apparent involvement in planning and assisting in the raid; he also, along with Alfred Beit, resigned as a director of the British South Africa Company. Jameson's raid had depleted Matabeleland of many of its troops and left the whole territory vulnerable. Seizing on this weakness, and a discontent with the British South Africa Company, the Ndebele revolted during March 1896 in what is now celebrated in Zimbabwe as the First War of Independence, the First Chimurenga, but it is better known to most of the world as the Second Matabele War. The Shona joined them soon thereafter. Hundreds of European settlers were killed within the first few weeks of the revolt and many more would die over the next year and a half. With few troops to support them, the settlers had to quickly build a laager in the centre of Bulawayo on their own. Against over 50,000 Ndebele held up in their stronghold of the Matobo Hills the settlers mounted patrols under such people as Burnham, Baden-Powell, and Selous. It would not be until October 1897 that the Ndebele and Shona would finally lay down their arms.
polyadenylation The addition of a series of multiple adenosine ribonucleotides, known as a poly(A) tail, to the 3'-end of a primary RNA transcript. A class of post-transcriptional modification, polyadenylation serves different purposes for different classes of RNA and in different cell types and organisms. For eukaryotic messenger RNAs, the addition of a poly(A) tail is an important step in the processing of the raw transcript into a mature mRNA ready for export to the cytoplasm; primary transcripts are first cleaved 10–30 nucleotides downstream of a highly conserved AAUAAA sequence, then the poly(A) tail is generated from the chaining of multiple ATP molecules through the action of polynucleotide adenylyltransferase.For non-coding RNAs and in many bacteria, polyadenylation has the opposite function, instead promoting the RNA's degradation.
=== Manuscript locations === Before his death, Tolkien negotiated the sale of the manuscripts, drafts, proofs and other materials related to his then-published works—including The Lord of the Rings, The Hobbit and Farmer Giles of Ham—to the Department of Special Collections and University Archives at Marquette University's John P. Raynor, S.J., Library in Milwaukee, Wisconsin, United States. After his death his estate donated the papers containing Tolkien's Silmarillion mythology and his academic work to the Bodleian Library at Oxford University. The Bodleian Library held an exhibition of his work in 2018, including more than 60 items which had never been seen in public before. In 2009 a partial draft of Language and Human Nature, which Tolkien had begun co-writing with Lewis but had never completed, was discovered at the Bodleian Library.
Sources: en.wikipedia.org
Subdural fluid collections Enhancement of the meninges Engorgement of venous structures Pituitary swelling Sagging of the brain For suspected spinal CSF leaks, spine imaging can be used to guide treatment.
=== Dependence and withdrawal === Long-term use of high doses of tramadol causes physical dependence and withdrawal syndrome. These include both symptoms typical of opioid withdrawal and those associated with serotonin–norepinephrine reuptake inhibitor (SNRI) withdrawal; symptoms include numbness, tingling, paresthesia, and tinnitus. Psychiatric symptoms may include hallucinations, paranoia, extreme anxiety, panic attacks, and confusion. In most cases, tramadol withdrawal will set in 12–20 hours after the last dose, but this can vary. Tramadol withdrawal typically lasts longer than that of other opioids. Seven days or more of acute withdrawal symptoms can occur as opposed to typically 3 or 4 days for other codeine analogs.
The tallest and heaviest dinosaur known from good skeletons is Giraffatitan brancai (previously classified as a species of Brachiosaurus). Its remains were discovered in Tanzania between 1907 and 1912. Bones from several similar-sized individuals were incorporated into the skeleton now mounted and on display at the Museum für Naturkunde in Berlin; this mount is 12 meters (39 ft) tall and 21.8 to 22.5 meters (72 to 74 ft) long, and would have belonged to an animal that weighed between 30000 and 60000 kilograms (70000 and 130000 lb). The longest complete dinosaur is the 27 meters (89 ft) long Diplodocus, which was discovered in Wyoming in the United States and displayed in Pittsburgh's Carnegie Museum of Natural History in 1907. The longest dinosaur known from good fossil material is Patagotitan: the skeleton mount in the American Museum of Natural History in New York is 37 meters (121 ft) long. The Museo Municipal Carmen Funes in Plaza Huincul, Argentina, has an Argentinosaurus reconstructed skeleton mount that is 39.7 meters (130 ft) long.
Sources: en.wikipedia.org
=== Neural tissues === Neuronostatin binds to monomeric Aβ1-42 and increases the presence of Aβ plaques within the cortex and hippocampus of APP/PS1 mice. Neuronostatin also affects proliferation rates and metabolism within neuronal cells via activation of GPR107 and PKA
El Niño–Southern Oscillation (ENSO) is a global climate phenomenon that emerges from variation in winds and sea surface temperatures over the tropical Pacific Ocean. Those variations have an irregular pattern but do have some appearance of cycles. The occurrence of ENSO is not easily predictable. It affects the climate of much of the tropics and subtropics, and has links (teleconnections) to higher-latitude regions of the world. The warming phase of the sea surface temperature is known as "El Niño" and the cooling phase as "La Niña". The Southern Oscillation is the accompanying atmospheric oscillation, which is coupled with the sea temperature change. El Niño is associated with higher than normal sea level air pressure over Indonesia and Australia, and across the Indian Ocean to the Atlantic Ocean. La Niña has roughly the reverse pattern: high pressure over the central and eastern Pacific and lower pressure through much of the rest of the tropics and subtropics. The two phenomena typically last approximately one year each and typically occur every two to seven years with varying intensity, with neutral periods of lower intensity interspersed. El Niño events can be more intense, but La Niña events may repeat and last longer. A key mechanism of ENSO is the Bjerknes feedback (named after Jacob Bjerknes in 1969) in which the atmospheric changes alter the sea temperatures that, in turn, alter the atmospheric winds in a positive feedback. Weaker easterly trade winds result in a surge of warm surface waters to the east and reduced ocean upwelling on the equator.
== External links == Research group which presented initial claims of hafnium nuclear isomer de-excitation control. Archived 25 February 2009 at the Wayback Machine – The Center for Quantum Electronics, The University of Texas at Dallas. JASON Defense Advisory Group report on high energy nuclear materials mentioned in the Washington Post story above Bertram Schwarzschild (May 2004). "Conflicting Results on a Long-Lived Nuclear Isomer of Hafnium Have Wider Implications". Physics Today. 57 (5): 21–24. Bibcode:2004PhT....57e..21S. doi:10.1063/1.1768663. Confidence for Hafnium Isomer Triggering in 2006. – The Center for Quantum Electronics, The University of Texas at Dallas. Reprints of articles about nuclear isomers in peer reviewed journals. – The Center for Quantum Electronics, The University of Texas at Dallas.
=== Environmental impact === Metformin and its major transformation product guanylurea are present in wastewater treatment plant effluents and regularly detected in surface waters. Guanylurea concentrations above 200 μg/L have been measured in the German river Erpe, which are amongst the highest reported for pharmaceutical transformation products in aquatic environments.
Sources: en.wikipedia.org
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.
No. The gastric protein is larger, while BPC-157 is a short fragment sequence. The peptide is produced synthetically for research use. The relationship is one of sequence origin, not chemical identity.
It is most often supplied as a lyophilized powder, frequently as the acetate salt. The powder is reconstituted with water or a buffer before use. Free-base and other salt forms also exist but are less common in catalogs.
It is a synthetic peptide built from fifteen amino acids, with a mass of roughly 1419 daltons. The sequence is reported to match a fragment of a protein present in human gastric juice. It is not a naturally circulating hormone.