The One Peptides catalogue includes more than 20 research peptides with purity confirmed by HPLC analysis and mass spectrometry. It covers growth hormone secretagogues, metabolic peptides, neuropeptides, melanocortin peptides, tissue peptides and telomere peptides — all intended exclusively for laboratory use (Research Use Only). The substances are not intended for human consumption or for diagnostic purposes. Browse the available peptides below or explore the individual categories.
Peptides are short chains of 2 to approximately 50 amino acid residues joined by peptide bonds. In terms of molecular size, they sit between single amino acids and full-length proteins — the latter are usually built from more than 50 amino acids that fold into complex tertiary and quaternary structures.
In nature, peptides perform signalling, hormonal and modulatory functions. Many of them act as ligands of membrane receptors, initiating signalling cascades inside cells. Examples include peptide hormones (insulin, oxytocin, vasopressin), neuropeptides that regulate the activity of the central nervous system, and antimicrobial peptides that form part of the innate immune response.
Peptide research dates back to the early 20th century, when Emil Fischer carried out the first synthesis of dipeptides. The breakthrough came with solid-phase peptide synthesis (SPPS), developed by Bruce Merrifield in 1963 and recognised with the Nobel Prize in 1984. Since then, synthetic peptides have become a widely used research tool, enabling the exploration of receptor mechanisms, signalling pathways and protein–protein interactions under controlled conditions.
All peptides available from One Peptides have Research Use Only (RUO) status and are intended exclusively for in vitro research and studies in animal models. They are not medicinal products, dietary supplements or foodstuffs.
Below, the peptides available in the shop are grouped by research area. Each name links to a dedicated subcategory with a full description of the substance.
A group of peptides acting on the somatotropic axis — they stimulate growth hormone (GH) secretion by activating the GHS-R1a receptor or by mimicking the action of growth hormone-releasing hormone (GHRH).
Substances studied in the context of metabolic pathways — their effects on the GLP-1R, GIPR and GCGR receptors and the modulation of lipid metabolism.
Peptides active at central nervous system receptors — modulation of the circadian rhythm, memory processes and neuroimmunological pathways.
Substances active at melanocortin receptors (MC1R–MC5R). Research focuses on the pathways of pigmentation, sexual behaviour and regulation of the HPG axis.
A group of peptides studied in the context of tissue repair processes, interactions with the extracellular matrix and the modulation of growth factors.
The choice of peptide depends on the assumptions of the research protocol and the type of experimental model. Indicative selection criteria are outlined below.
Research on the somatotropic axis — if the protocol concerns the modulation of GH secretion, consider secretagogues with differing pharmacological profiles. GHRP-2 and GHRP-6 differ in their selectivity for GHS-R1a and in their effect on other hormones (prolactin and cortisol in animal models). Ipamorelin has a narrower activity profile. The GHRH analogues — CJC-1295 and CJC-1295 DAC — act through a different receptor and can be used together with secretagogues in synergistic protocols.
Metabolic research — the incretin peptides (GLP-1+GIP, SEMA G, TRIPLE G) are gut hormone analogues with differing receptor selectivity. HGH Fragment 176-191 is sometimes used in protocols on lipolysis in adipocyte cultures.
Neuroscience research — Semax and Selank are heptapeptides with different mechanisms. DSIP is a chronobiological peptide, while oxytocin is a tool for behavioural studies in rodent models.
Extracellular matrix research — BPC-157, TB-500 and GHK-Cu show activity towards different components of the extracellular matrix and growth factors. The choice depends on the type of tissue studied.
The boundary between peptides and proteins is conventionally drawn at around 50 amino acid residues. Peptides have a lower molecular weight and a simpler spatial structure, and they generally do not form stable tertiary domains. In laboratory practice, this means different conditions for storage, dissolution and analysis.
Peptide lyophilisates should be stored at -20°C and protected from moisture and direct light. After reconstitution, solutions should be stored at 2–8°C and used within a few weeks. Detailed instructions are provided on the product page and in the Safety Data Sheet (SDS).
No. All peptides in the catalogue have Research Use Only status and are not intended for human consumption, diagnostic or therapeutic purposes. They are chemical reagents intended exclusively for laboratory research.
Every batch of peptide from One Peptides comes with a Certificate of Analysis (CoA) containing the results of HPLC chromatography and mass spectrometry (MS). These documents confirm the identity of the substance and its purity expressed as a percentage. The CoA can be downloaded from the product page.
Peptides are chains of amino acids — biomolecules of a peptide nature. SARMs (selective androgen receptor modulators), by contrast, are small organic molecules that are mostly not peptides. They differ in chemical structure, mechanism of action and target receptors. In the One Peptides catalogue, both groups have the status of research reagents (RUO).
We offer a wide selection of peptides tailored to a range of laboratory analytical needs.
Every batch is tested for identity and purity (HPLC, MS) and comes with a certificate of analysis.
We invest in analytical testing and full batch documentation for every product.
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