Research
Peptide research
An overview of synthetic peptides as research tools, and the peptide materials in our catalog.
What makes a peptide
Peptides are short chains of amino acids joined by amide bonds, usually somewhere between two and fifty residues long. Research peptides are made by solid-phase peptide synthesis, which builds the chain one residue at a time on a resin support and allows exact control of the sequence.
Small structural changes matter. N-terminal acetylation, C-terminal amidation, cyclization and fatty-acid attachment all change how a peptide behaves in solution and in assays, which is why the full sequence and any modifications are listed on each product page.
Salt forms and counter-ions
Synthetic peptides are isolated as salts. Acetate and trifluoroacetate are the most common, and some materials, such as BPC-157 arginate, use an amino-acid counter-ion. The salt form affects net peptide content and solubility, so it is worth recording in your lab notes.
Peptides in the catalog
BPC-157 is a synthetic 15-residue peptide based on a sequence from a gastric protein. TB-500 is a synthetic peptide associated with the actin-binding region of thymosin beta-4. GHK-Cu is the copper complex of the tripeptide Gly-His-Lys, first isolated from human plasma in the 1970s. Each is available as a single material and in defined blends.