Peptide Stapling Service
Peptide Stapling Service
Peptide Stapling Service is an advanced peptide engineering platform focused on stabilizing peptide secondary structures, particularly alpha-helices, to improve biological activity, metabolic stability, and cell permeability. Peptides are inherently flexible molecules, and in solution they often lose their bioactive conformation, which can significantly reduce binding affinity and pharmacological performance. Peptide stapling addresses this limitation by chemically constraining the peptide into a defined and bioactive structure.
This technology has become especially important in drug discovery programs targeting intracellular protein–protein interactions (PPIs), which are traditionally difficult to modulate using small molecules or antibodies.
Stapling Technology and Structural Design
Peptide stapling involves the introduction of covalent chemical bridges—commonly hydrocarbon, lactam, or other synthetic linkers—between side chains at defined positions along the peptide sequence. These cross-links stabilize the alpha-helical conformation, reducing structural flexibility and increasing the probability that the peptide adopts its active binding state.
The design process typically involves careful selection of stapling positions (such as i, i+4 or i, i+7 configurations) to ensure optimal helix stabilization without disrupting key binding residues. Computational modeling and structural analysis are often used to guide stapling site selection and predict conformational outcomes.
