Peptide Blog

NAD+ peptide (nicotinamide adenine dinucleotide) is a coenzyme that plays a potential role in various biological processes, particularly in cellular metabolism. It is derived from the B-vitamin niacin (vitamin B3) in redox reactions, transferring electrons during metabolic reactions. NAD+ exists in two forms: oxidized (NAD+) and reduced (NADH). The scientific theory posits that the oxidized...

N-Acetyl Selank is an acetylated form of the heptapeptide Selank. Selank is a synthetic analog of the natural tetrapeptide tuftsin (threonine - lysine - proline - arginine). The sequence of N-Acetyl Selank is acetyl - threonine - lysine - proline - arginine - proline - glycine - proline. Adding proline - glycine - proline at...

Acetyl Hexapeptide-3 (Argireline) is a synthetic peptide used in scientific research. It is a chain of six amino acids connected in a specific sequence: N-acetyl - L-alpha-glutamyl - L-alpha-glutamyl - L-methionyl - L-glutaminyl - L-arginyl - L-arginine amide. Acetyl Hexapeptide-3 has gained attention for its potential molecular mechanisms that may interact with the release of...

Kisspeptin-10, aka Metastin (45-54) or KP 45–54, is a peptide that is derived from the cleavage of Kisspeptin-54, which itself is produced from a precursor polypeptide encoded by the KISS1 gene. Kisspeptins are naturally produced by hypothalamic cells in the central nervous system. The kisspeptin (KISS1) gene, found in those cells, encodes a 145-amino acid...

N-Acetyl Semax is a synthetic peptide that is an acetylated version of Semax. Like Semax, it consists of a 4 amino acid fragment (Met-Glu-His-Phe), a common part in the sequence of all melanocortin hormones, such as the adrenocorticotropic hormone (ACTH), and a Pro-Gly-Pro fragment as a stabilizer, that is attached at the C-terminus. The acetylation...

Gonadorelin (GnRH), also known as growth hormone releasing factor (GHRF), somatocrinin, or somatoliberin, is a decapeptide made of 10 amino acids and has the sequence: pyro-Glu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH2. The first amino acid, pyro-Glu, is an unusual form of glutamic acid undergoing cyclization. Scientists consider this cyclization important for Gonadorelin's biological activity, as it may increase its stability...

PE-22-28 is a synthetic peptide analog of spadin, a protein naturally produced in the central nervous system. The sequence of PE-22-28 is based on a fragment of the spadin protein that corresponds to the chain from the 22nd to 28th amino acids of its sequence. More specifically, the amino acid sequence of PE-22-28 is Proline...

Vilon peptide was developed in the 1990s by researchers at the Institute of Immunology in Moscow, Russia. The development of Vilon was part of a broader research program aimed at developing novel immunomodulatory peptides. The researchers were particularly interested in peptides that could regulate the activity of T-cells, a type of white blood cell that plays...

Liraglutide peptide is a synthetic analog of glucagon-like peptide-1 (GLP-1), and it was developed to activate the GLP-1 receptor, increasing insulin secretion, decreasing glucagon secretion, and slowing gastric emptying.  Liraglutide has the following sequence: H-His-Ala-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Lys(γ-Glu-palmitoyl)Glu-Phe-Ile-Ala-Trp-Leu-Val-Lys-Gly-Arg-Gly-OH. The modification in Liraglutide peptide is the addition of a fatty acid chain (palmitic acid) to the amino acid lysine, in position 26 of...