The short version of GLP-1 receptor fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2026-05-23 and is reviewed periodically as new material appears.
Reported molecular weight is approximately 4113.6 daltons for the free base, and the peptide is supplied as a lyophilized powder or in buffered liquid form depending on the intended use. It is freely soluble in water when formulated with appropriate excipients, though the unconjugated peptide shows limited stability at neutral pH over long periods. Analytical characterization typically relies on reversed-phase high-performance liquid chromatography and mass spectrometry. Purity specifications for research-grade material commonly exceed ninety-five percent by area. Isotopic and impurity profiles differ between suppliers.
Two principal therapeutic variants exist under separate regulatory filings, one indicated for glycemic control in type 2 diabetes and one for chronic weight management. Both use the same active molecule; differences lie in formulation strength, titration schedule, and labeling. Regulatory agencies in the United States and European Union approved injectable forms in 2017 and 2018 respectively. An oral tablet formulation received approval later, using a carrier molecule to enhance absorption across the gastric epithelium. Labeling differs by jurisdiction and by indication.
The company that developed the compound filed it as a long-acting analogue, and it gained first approval in 2017 for type 2 diabetes. Later authorisations from several regulators extended the indication to chronic weight management, and the World Health Organization added the glucagon-like peptide-1 receptor agonist drug class to its model list of essential medicines in 2023. Production uses solid-phase peptide synthesis followed by side-chain conjugation and chromatographic purification. Supply constraints and cost differences across regions are well documented. Literature on long-term outcomes continues to grow, with many trials reporting surrogate endpoints rather than hard clinical endpoints.
Semaglutide is a synthetic peptide of thirty-one amino acids that shares roughly ninety-four percent sequence identity with human glucagon-like peptide-1. Two substitutions resist enzymatic cleavage by dipeptidyl peptidase-4, and a fatty diacid side chain attached through a linker promotes binding to serum albumin. That albumin binding slows renal clearance and extends the circulating half-life from minutes to approximately one week. The structural changes are well established in the published literature. Whether the same modifications affect receptor signalling bias in ways that matter clinically remains an open question.
| Property | Value | Notes |
|---|---|---|
| Molecular formula (free base) | C187H291N45O59 | Approximate; salt and hydrate forms differ |
| Molecular weight | ~4113.6 Da | Varies with counterion and hydration |
| Appearance | White to off-white powder | Lyophilized research material |
| Solubility class | Freely soluble in water | As formulated; native peptide less stable near neutral pH |
| Typical storage | 2 to 8 degrees Celsius | Protect from light; avoid repeated freeze-thaw |
Two structural features account for the prolonged half-life of semaglutide. A modified amino acid at position 8 resists cleavage by dipeptidyl peptidase-4, the enzyme that rapidly degrades native GLP-1. A fatty diacid side chain binds serum albumin, which limits renal clearance and protects the peptide from enzymatic breakdown. These modifications yield a plasma half-life of approximately one week in humans, allowing once-weekly administration. The relationship between plasma concentration and clinical effect varies between individuals, and sources of that variability are still being characterized.
Semaglutide is a synthetic peptide analog of glucagon-like peptide-1 (GLP-1), a hormone released from intestinal L-cells after food intake. The compound belongs to the incretin mimetic class and acts at GLP-1 receptors distributed across pancreatic, gastrointestinal, cardiovascular, and central nervous system tissues. Compared with native GLP-1, the molecule carries structural changes that extend its activity from minutes to roughly one week. It is studied for glycemic control in type 2 diabetes and for weight management, and its effects on cardiovascular and other outcomes remain active research areas.
Clinical development of this compound followed earlier short-acting GLP-1 analogues that required frequent injection. Once-weekly subcutaneous formulations entered use after 2017, and an oral formulation using a permeation enhancer later became available. The oral version pairs the peptide with sodium N-(8-[2-hydroxybenzoyl] amino) caprylate, a carrier that improves uptake across the gastric epithelium. Interest has expanded from glycaemic control into weight management and metabolic liver disease. Regulatory status and approved indications differ between countries, and the product remains subject to ongoing safety monitoring.
Semaglutide is a synthetic peptide that acts as an agonist at the glucagon-like peptide-1 receptor. It is a structural analogue of human GLP-1(7-37), modified to resist enzymatic degradation by dipeptidyl peptidase-4. The peptide backbone contains alpha-aminoisobutyric acid at position 8, a substitution that stabilises the helix and slows cleavage. A fatty diacid side chain attached through a linker at lysine 34 promotes binding to serum albumin, which extends the circulating half-life. These two modifications together allow less frequent administration than native GLP-1 requires.
Activation of the GLP-1 receptor couples to Gs signalling and raises intracellular cyclic AMP in pancreatic beta cells. The resulting insulin release depends on prevailing glucose concentrations, so the effect is greater when glucose is elevated. Receptor engagement also suppresses glucagon secretion and slows gastric emptying, which flattens post-meal glucose excursions. In the central nervous system, signalling in hypothalamic and brainstem regions is associated with reduced appetite and lower energy intake. Studies continue to examine effects on cardiac, renal and hepatic endpoints; whether those benefits are independent of weight change remains an open question.
Reverse-phase high-performance liquid chromatography is the standard method for purity assessment, separating the peptide from truncated or oxidized variants. Mass spectrometry confirms molecular mass and detects modifications, while ultraviolet absorbance near 280 nanometers supports concentration measurement through tryptophan and tyrosine residues. Circular dichroism can indicate secondary structure, though the peptide is largely helical in solution, and ion-exchange chromatography resolves charge variants. Purity values above 95 percent are typical for research-grade material. Stability studies track degradation over time under defined conditions.
Lyophilized semaglutide is typically stored at temperatures between minus 20 and minus 80 degrees Celsius for long-term preservation. Short-term storage at 2 to 8 degrees Celsius is common for working aliquots. Repeated freeze-thaw cycles can degrade the peptide and are usually avoided. The molecule is hygroscopic in its solid form, so containers should remain sealed with desiccant. Solutions are less stable than powders and are generally prepared fresh. Light exposure is limited because aromatic residues can undergo photo-oxidation.
Semaglutide dissolves readily in water and in aqueous buffers near neutral pH. Solubility decreases near the isoelectric point, where net charge is minimal. Common laboratory solvents include phosphate-buffered saline and dilute ammonium bicarbonate. Strongly acidic or basic conditions may accelerate hydrolysis. Working concentrations are usually prepared by diluting a concentrated stock. Vial surfaces can adsorb small amounts of peptide at low concentrations, so carrier proteins or low-binding tubes are sometimes used.
=== Medical === Desomorphine was previously used in Germany, Austria, and Switzerland for the treatment of severe pain. While medical usage of desomorphine was terminated in 1981, during the final years leading up to that it was being used to treat a single patient in Bern, Switzerland with a rare illness. While desomorphine was found to be faster acting and more effective than morphine for the rapid relief of severe pain, its shorter duration of action and the relatively more severe respiratory depression produced at equianalgesic doses, as well as a high incidence of other side effects such as hypotension and urinary retention, were felt to outweigh any potential advantages.
== Early life and education == Vasquez was born on August 3, 1984, in El Paso, Texas. He was raised in the El Paso–Juárez–Las Cruces border region, spending much of his childhood in both the United States and Mexico. He grew up in Ciudad Juárez, Mexico, where he spent time in his grandfather's television repair shop. His grandfather Javier Bañuelos, originally from Zacatecas, Mexico, had transitioned from farming to working as a mailman before establishing his repair business. Vasquez later attended Montwood High School in El Paso and then enrolled at New Mexico State University (NMSU) in Las Cruces, where he earned a Bachelor of Arts degree in English and journalism in 2008. During college, he served as the news editor and later as editor-in-chief of The Round Up, NMSU's student-run newspaper.
Several of the CPK colors refer mnemonically to colors of the pure elements or notable compound. For example, hydrogen is a colorless gas, carbon as charcoal, graphite or coke is black, sulfur powder is yellow, chlorine is a greenish gas, bromine is a dark red liquid, iodine in ether is violet, amorphous phosphorus is red, rust is dark orange-red, etc. For some colors, such as those of oxygen and nitrogen, the inspiration is less clear. Perhaps red for oxygen is inspired by the fact that oxygen is normally required for combustion or that the oxygen-bearing chemical in blood, hemoglobin, is bright red, and the blue for nitrogen by the fact that nitrogen is the main component of Earth's atmosphere, which appears to human eyes as being colored sky blue. It is likely that the CPK colours were inspired by models in the nineteenth century. In 1865, August Wilhelm von Hofmann, in a talk at the Royal Institution in London, was using models made from croquet balls to illustrate valence, so he used the coloured balls available to him. (At the time, croquet was the most popular sport in England, so the balls were plentiful.) The essay "On the Combining Power of Atoms", in the 12th volume of Chemical News, states that "Hofmann, at a lecture given at the Royal Institution in April 1865 made use of croquet balls of different colours to represent various kinds of atoms (e.g. carbon black, hydrogen white, chlorine green, 'fiery' oxygen red, nitrogen blue)."
N-formyl peptide receptor 2 (FPR2) is a G-protein coupled receptor (GPCR) located on the surface of many cell types of various animal species. The human receptor protein is encoded by the FPR2 gene and is activated to regulate cell function by binding any one of a wide variety of ligands including not only certain N-Formylmethionine-containing oligopeptides such as N-Formylmethionine-leucyl-phenylalanine (FMLP) but also the polyunsaturated fatty acid metabolite of arachidonic acid, lipoxin A4 (LXA4) and long chain Ceramide . Because of its interaction with lipoxin A4, FPR2 is also commonly named the ALX/FPR2 or just ALX receptor.
A syndesmosis (“fastened with a band”) is a type of fibrous joint in which two bones are united to each other by fibrous connective tissue. The gap between the bones may be narrow, with the bones joined by ligaments, or the gap may be wide and filled in by a broad sheet of connective tissue called an interosseous membrane. The syndesmoses found in the forearm and leg serve to unite parallel bones and prevent their separation.
Sources: en.wikipedia.org
=== Factors determining accuracy === Lupus anticoagulant, a circulating inhibitor predisposing for thrombosis, may skew PT results, depending on the assay used. Variations between various thromboplastin preparations have in the past led to decreased accuracy of INR readings, and a 2005 study suggested that despite international calibration efforts (by INR) there were still statistically significant differences between various kits, casting doubt on the long-term tenability of PT/INR as a measure for anticoagulant therapy. Indeed, a new prothrombin time variant, the Fiix prothrombin time, intended solely for monitoring warfarin and other vitamin K antagonists has been invented and recently become available as a manufactured test. The Fiix prothrombin time is only affected by reductions in factor II and/or factor X and this stabilizes the anticoagulant effect and appears to improve clinical outcome according to an investigator initiated randomized blinded clinical trial, The Fiix-trial. In this trial thromboembolism was reduced by 50% during long-term treatment and despite that bleeding was not increased.
Evidence for depression being causally associated with isotretinoin use includes 41 reports of positive challenge/dechallenge/rechallenge with isotretinoin, involving administering isotretinoin, withdrawing the drug, and then re-administering it. The majority of these cases had no psychiatric history. There is also a temporal relationship between the development of depression and initiation of isotretinoin treatment, with most cases developing after 1–2 months of treatment. Further, higher doses of isotretinoin increase the risk of developing depression, with 25% of people showing depression on a dose of 3 mg/kg/day as compared with 3–4% at normal doses. Studies have uncovered several biological processes which may credibly explain the affective changes induced by isotretinoin.
== Malignant neoplasm of respiratory and intrathoracic organs (160–165) == 160 Malignant neoplasm of nasal cavities, middle ear, and accessory sinuses 161 Malignant neoplasm of larynx 162 Malignant neoplasm of trachea, bronchus, and lung 162.0 Trachea 162.2 Main bronchus 162.3 Upper lobe, bronchus or lung 162.4 Middle lobe, bronchus or lung 162.5 Lower lobe, bronchus or lung 162.8 Other parts of bronchus or lung 162.9 Bronchus and lung, unspecified 163 Malignant neoplasm of pleura 164 Malignant neoplasm of thymus, heart, and mediastinum 165 Malignant neoplasm of other and ill-defined sites within the respiratory system and intrathoracic organs
=== Metastable mixtures === A mixture may appear to have no tendency to change, though it is not at equilibrium. For example, a mixture of SO2 and O2 is metastable as there is a kinetic barrier to formation of the product, SO3.
=== Signalling of fetal maturation and parturition === As pregnancy advances to term, the fetal membranes undergo weakening. The amnion is vital in the synthesis of prostaglandins which reach the myometrium and create and initiate parturition. The chorion expresses chemicals that balance synthesis and metabolism of these prostaglandins to ensure that the myometrium is not activated pre-term. Prostaglandin E2 is thought to be synthesized by cells in the amnion and is essential in dilation of the cervix at the initiation of parturition. Glucocorticoids have been implicated in fetal maturation, regulation of immune response and many other pregnancy associated changes. As well as its function in parturition, Prostaglandin E2 is vital for fetal lung maturation. Additionally, there is an abundance of 11β-hydroxysteroid dehydrogenase 1 expressed in the foetal membranes. This enzyme converts biologically inactive cortisone into active cortisol, another chemical vital for fetal maturation and labour initiation.
Sources: en.wikipedia.org
=== Forked connectivity === HDMI has supported Consumer Electronics Control (CEC) commands since the first version. The CEC bus allows connecting multiple sources to a single display, and controlling any of these devices from any remote. DisplayPort 1.3 added the possibility of transmitting CEC commands over the AUX channel. On the other hand, DisplayPort supports connecting multiple displays to one DP port via the Multi-Stream Transport (MST) feature, allowing a single computer to have multiple displays. These differences reflects the origins the two standards, and the priorities of their authors. HDMI originates from consumer electronics companies, whereas DisplayPort is owned by VESA, which started as an organization for computer standards.
=== Identification of immunogenic subunit === Candidate subunits will be selected primarily by their immunogenicity. To be immunogenic, they should be of foreign nature and of sufficient complexity for the reaction between different components of the immune system and the candidates to occur. Candidates are also selected based on size, nature of function (e.g. signalling) and cellular location (e.g. transmembrane).
Polling indicated that the majority of voters support a ceasefire and American mediation in the Gaza war. According to a YouGov poll in March 2024, 52% of Americans supported stopping weapons shipments to Israel, coming largely from Americans who voted for Biden in 2020 (62% support) and people who did not vote in 2020 (60%). 55% of Americans who voted for Trump in 2020 opposed halting weapons shipments, while 30% supported the measure. Republicans generally supported arms to Israel, while Democrats were divided on the issue. Harris largely continued Biden's approach to the Israeli–Palestinian conflict, although she was seen as more sympathetic to Palestinians than Biden or Trump. During the Gaza war, Harris supported Israel's offensive, saying "the threat Hamas poses to the people of Israel must be eliminated". By March 2024, Harris was increasingly critical of Israel, calling for a ceasefire and two-state solution, and opposing the Rafah offensive, though still supporting the war overall. In the Democratic primaries, the Uncommitted National Movement led a protest campaign against Biden and later Harris over the war, calling for a ceasefire and arms embargo on Israel. It received over 700,000 votes and 36 delegates. Harris engaged with Uncommitted and Arab-American leaders, but refused to change her position. Harris argued for continued weapons shipments to Israel, saying it had a right to defend itself. Uncommitted ultimately encouraged its supporters to vote for Harris, though many were reluctant.
Likewise, according to this second interpretation, a living body is alive not only because of its structure but also because of an additional property: the soul, which a properly organized body needs in order to be alive. John Vella uses Frankenstein's monster to illustrate the second interpretation: the corpse lying on Frankenstein's table is already a fully organized human body, but it is not yet alive; when Frankenstein activates his machine, the corpse gains a new property, the property of life, which Aristotle would call the soul.
== Honours == Bengt Mannervik (born Eriksson) studied at the prestigious high school Norra Real in Stockholm and was given the prize for the best graduate in 1962. In 1988 he won the competition among 20 applicants for the internationally advertised Karin and Herbert Jacobsson Professorship of Biochemistry at Uppsala University, originally held by Nobel Prize Laureate Arne Tiselius. In 2013 he was awarded the Björkén Prize of Uppsala University. He was elected to the Academia Europaea in 2023. He was elected to the American Association for Cancer Research, and the Royal Society of Sciences at Uppsala. He is an Honorary Member of the American Society of Biochemistry and Molecular Biology. He was nominated Doctor Jubilaris at Stockholm University in 2022.
Sources: en.wikipedia.org
It is a modified version of the natural hormone, with three amino acid changes and a fatty acid side chain added. These edits extend its half-life from minutes to about one week. The core receptor activity is retained.
Both deliver the same active peptide and act on the same receptor. The tablet includes an absorption enhancer because peptides are poorly taken up intact from the gut. Bioavailability of the oral route is substantially lower, so the two are not dose-equivalent.
No, it is entirely synthetic and does not occur in nature. Native GLP-1 is produced in the gut and pancreas, but the analog is manufactured by chemical synthesis or recombinant methods. Traces of the analog are not expected in people who never received it.
It is a glucagon-like peptide-1 receptor agonist, often grouped with the incretin mimetics. Its backbone is modified from the human hormone to resist enzymatic degradation and to bind albumin. These two features distinguish it from the native peptide.