The short version of Fragment designation fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2026-04-04. Anything still debated is marked as such rather than presented as settled.
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.
BPC-157 is a synthetic pentadecapeptide whose sequence is commonly given as Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. It is described in the literature as a fragment of a larger protein found in human gastric juice, referred to as body protection compound. The peptide was first characterized in the early 1990s by a research group in Zagreb, Croatia. Its molecular formula is C62H98N16O22 and its monoisotopic mass is approximately 1419 daltons.
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.
Lyophilized material is generally kept cold, commonly at minus twenty degrees Celsius, and shielded from moisture and light. Solutions are less stable than the dry powder, so repeated freeze-thaw cycles are avoided by splitting the material into single-use portions. Published stability data for this particular peptide are limited, which means suggested hold times should be read as provisional. Long-term refrigeration of reconstituted solutions is not well supported by available evidence.
Identity and purity are checked with standard peptide techniques. Reversed-phase high-performance liquid chromatography separates the main peak from closely related impurities and yields a percentage purity. Mass spectrometry confirms that the measured mass matches the theoretical value. Amino acid analysis offers an independent check on overall composition. These analytical methods characterize the material itself and reveal nothing about how it behaves in a living system.
In its common research form the peptide is supplied as a lyophilized powder. It dissolves readily in water and in typical aqueous buffers, which simplifies preparation of working solutions. Laboratories usually prepare small aliquots instead of one large volume. The dry material appears as a white to off-white solid with no distinctive odor. Bulk quantities are typically shipped in sealed vials.
| Property | Value | Notes |
|---|---|---|
| Appearance | White to off-white lyophilized powder | Assessed by visual inspection under ordinary laboratory lighting |
| Molecular mass | Approximately 1419 Da | Monoisotopic mass for the fifteen-residue sequence |
| Solubility class | Freely soluble in water | Stock solutions commonly prepared in water or aqueous buffer |
| Typical storage temperature | -20 °C or below, desiccated | Lyophilized powder; repeated freeze-thaw cycles are usually avoided |
| Common analytical method | Reversed-phase HPLC with UV detection | Frequently paired with mass spectrometry to confirm identity |
BPC-157 is commonly supplied as a lyophilized powder, a freeze-dried solid that is reconstituted before use in laboratory work. As a short peptide, it dissolves readily in water and in aqueous buffer solutions, and stock solutions are typically prepared in water or a mild buffer. The chain contains several proline and acidic residues, which influence how it behaves in solution. Because the solid can take up moisture, weighing and handling are usually performed under low-humidity conditions. Its solubility class is described as freely soluble in water rather than requiring an organic solvent.
Dry powder is generally stored at low temperature, with minus twenty degrees Celsius or colder advised for extended retention. Reconstituted solutions are less stable than the solid form and are normally kept cold and shielded from repeated freeze-thaw cycles. Light exposure is avoided because some peptides degrade under ultraviolet radiation. The exact rate of degradation depends on concentration, pH, and the presence of salts, so a single shelf life does not apply to every preparation. Reported stability figures should be read as indicative of typical handling rather than as universal constants.
Identity and purity are established using reversed-phase high-performance liquid chromatography, which separates the peptide from related impurities and yields a percentage purity. Mass spectrometry, typically with electrospray ionization, confirms the molecular mass against the expected value. Amino acid analysis or peptide mapping provides additional sequence confirmation. These methods are complementary, since chromatography measures how much material is present while mass spectrometry verifies what that material is. A certificate of analysis normally reports both.
Analytical results depend on the column, gradient, and detector wavelength chosen by the laboratory, so purity values from different sources are not always directly comparable. Water content, counterion form, and residual trifluoroacetate affect both mass and purity calculations. Microbiological and endotoxin testing are separate from chemical purity and are not covered by a standard chromatographic run. Buyers evaluating a material typically request the full method description rather than a single purity figure.
Lyophilized peptide powder is generally stored at minus twenty degrees Celsius or lower and kept away from light and moisture. Under these conditions degradation is slow, and sealed vials remain stable for extended periods. Once dissolved, the material is less stable, particularly in aqueous buffers near neutral pH, where hydrolysis and oxidation proceed faster. Solutions are usually kept cold and used within days to weeks. Repeated freeze-thaw cycles are avoided because they encourage aggregation.
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.
Outside laboratory supply channels, the peptide is sold as a research chemical, a category that carries no requirement to demonstrate purity, identity, or freedom from contamination. Because it is not an approved medicine, products labeled BPC-157 sit in a regulatory gap in many countries, and actual content may differ from the label. Sports organizations list it among prohibited substances, so its presence in an athlete's sample can produce a doping finding regardless of how the material was obtained.
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.
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.
== Mechanism == The current believed mechanism for synthetase activity is that first glutathione and Mg2+-ATP bind to the enzyme in a ternary complex where glutathione becomes activated by ATP and forms glutathionyl phosphate. ADP then leaves the active site and the activated phosphate still bound to the enzyme in what is equivalent to a substituted enzyme reacts with glutathionylspermidine to form trypanothione.
== As a histone tail modification == One of the most well known epigenetic mechanisms that proline isomerization plays a role in is the modification of histone tails, specifically those of histone H3. Fpr4 is a PPIase, in the FK507BP group, that exhibits catalytic activity at the proline positions 16, 30, and 38 (also written P16, P30, and P38 respectively) on the N-terminal region of histone H3 in Saccharomyces cerevisiae. Fpr4's binding affinity is strongest at the P38 site, followed by P30 and then P16. However the catalytic efficiency, or the increase in isomerization rates, is highest at P16 and P30 equally, followed by P38 which exhibits a very small change in isomerization rates with the binding of Fpr4. Histone H3 has an important lysine residue at the 36 position (also written K36) on the N-terminal tail which can be methylated by Set2, a methyltransferase. Methylation of K36 is key to normal transcription elongation. Due to P38's proximity to K36, cross-talk between P38 isomerization and K36 methylation can occur. This means that isomer changes at the P38 position can affect methylation at the K36 position. In the cis position, P38 shifts the histone tail closer to the DNA, crowding the area around the tail. This can cause a decrease the ability of proteins to bind to the DNA and to the histone tail, including preventing Set2 from methylating K36.
List of largest empires List of military conflicts spanning multiple wars List of countries by number of military and paramilitary personnel List of militaries by country List of ongoing armed conflicts Interwar period Post–Cold War era
== Female imprisonment rate == Thailand's female incarceration rate is the world's highest at 66.4 female convicts per 100,000 inhabitants (As of 2015). Other ASEAN nation's female imprisonment rates are: Vietnam, 22.2; Singapore, 21.8; Myanmar, 18.8; Malaysia, 11.7; Brunei, 11.2; Philippines, 10.3; Cambodia, 8.5; Laos, 7.4; Indonesia, 3.3.
Sources: en.wikipedia.org
=== Mass spectrometry === Deuterated (i.e. where all or some hydrogen atoms are replaced with deuterium) compounds are often used as internal standards in mass spectrometry. Like other isotopically labeled species, such standards improve accuracy, while often at a much lower cost than other isotopically labeled standards. Deuterated molecules are usually prepared via hydrogen isotope exchange reactions.
=== Food safety === In 2015, the Food and Drug Administration alerted the public that products containing "cake batter" ice cream sold at Cold Stone Creamery stores may be associated with an outbreak of [salmonella] infection in several states. In response, Cold Stone Creamery has agreed to immediately remove all "cake batter" ice cream products from its stores throughout the US.
As of 2021, the drug epidemic in the United States was the deadliest it had ever been, according to federal data. More than 100,000 people died of drug overdoses in the United States during the 12-month period ending April 2021, according to provisional data published November 17, 2021, by the US Centers for Disease Control and Prevention. Overdose deaths increased 28.5% from the same period a year earlier and nearly doubled over the previous five years. Opioids continued to be the primary cause of drug overdose deaths. Additionally, the drug is increasingly affecting younger populations. A 2018 study found that fentanyl is involved in the majority of opioid-related deaths and that deaths involving fentanyl were more likely to occur in younger age groups and among non-Hispanic white individuals. Furthermore, young adults are increasingly affected by nonfatal fentanyl overdoses in recent time periods along with these other deadly occurrences. The drug is 50 to 100 times stronger than morphine and often cut with other drugs, meaning the user does not know they are taking fentanyl. The Drug Enforcement Administration (DEA) says 2.2 pounds represents half a million lethal doses. Synthetic opioids, primarily fentanyl, caused nearly two-thirds (64%) of all drug overdose deaths in the 12-month period ending April 2021, up 49% from the year before, the CDC's 's National Center for Health Statistics found. Fentanyl, a synthetic opioid painkiller, is 50 to 100 times more potent than morphine and 30 to 50 times more potent than heroin, with only 2 mg becoming a lethal dose.
Sources: en.wikipedia.org
===== Induction of anti-tumor cytotoxicity of cytotoxic T cells ===== SeV even after UV inactivation, being injected intratumorally, can cause tumor infiltration by dendritic cells (DCs) and CD4+ and CD8+ T, and it also can cause enhancing of anti-tumor activity of these cells. Most likely, viral hemagglutinin-neuraminidase protein, highly contributes to the effect (see "'Neuraminidase (NA) removal of sialic acid" section above). This hypothesis is based on two observations. First, the functional hemagglutinin-neuraminidase protein of the oncolytic Newcastle disease virus (NDV), which is a relative of SeV, has been shown to enhance the tumor-specific cytotoxic response of CD8+ T-cells and to increase the activity of CD4+ T-helper cells. Second, UV-inactivated NDV, which is can not replicate, promotes anti-tumor CTL response as well as does intact NDV, which can replicate. Since the hemagglutinin-neuraminidase proteins of the SeV and NDV viruses are highly homologous and function similarly, it is likely that the HN protein of the SeV virus can activate both CTL and natural killers cell responses. Most likely neuraminidase removal of sialic acid from the surface of malignant cells contributes to this effects.
=== Biosynthesis === Arginine is produced in organisms via de novo synthesis from glutamine, which has a simpler chemical structure. Arginine is also generated as an intermediate within the urea cycle but is consumed there to the same extent (i.e. there is no net production). In the urea cycle, the transient formation of arginine is a necessary step in the production and excretion of urea.
Sabo DJ, Orlando JA (1968). "Isolation, purification, and some properties of reduced nicotinamide adenine dinucleotide phosphate-cytochrome C2 reductase from Rhodopseudomonas spheroides". J. Biol. Chem. 243 (13): 3742–9. doi:10.1016/S0021-9258(19)34201-2. PMID 4385431.
When using different buffers in the gel (discontinuous gel electrophoresis), the gels are made up to one day prior to electrophoresis, so that the diffusion does not lead to a mixing of the buffers. The gel is produced by free radical polymerization in a mold consisting of two sealed glass plates with spacers between the glass plates. In a typical mini-gel setting, the spacers have a thickness of 0.75 mm or 1.5 mm, which determines the loading capacity of the gel. For pouring the gel solution, the plates are usually clamped in a stand which temporarily seals the otherwise open underside of the glass plates with the two spacers. For the gel solution, acrylamide is mixed as gel-former (usually 4% V/V in the stacking gel and 10-12 % in the separating gel), methylenebisacrylamide as a cross-linker, stacking or separating gel buffer, water and SDS. By adding the catalyst TEMED and the radical initiator ammonium persulfate (APS) the polymerisation is started. The solution is then poured between the glass plates without creating bubbles. Depending on the amount of catalyst and radical starter and depending on the temperature, the polymerisation lasts between a quarter of an hour and several hours. The lower gel (separating gel) is poured first and covered with a few drops of a barely water-soluble alcohol (usually buffer-saturated butanol or isopropanol), which eliminates bubbles from the meniscus and protects the gel solution of the radical scavenger oxygen.
Sources: en.wikipedia.org
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.
It is normally supplied as a lyophilized powder in a sealed vial. The powder dissolves readily in water, and stock solutions are typically prepared shortly before use. Cold storage is standard laboratory practice.
The letters are generally read as shorthand for body protection compound. That label comes from the original research context rather than from formal nomenclature. No standardized nonproprietary name exists for the peptide.
Dry powder is commonly held at minus twenty degrees Celsius, desiccated and away from light. Cold storage slows degradation of the lyophilized material.