Proinsulin C-peptide (human) is a 31-amino acid peptide that links the Proinsulin A and B chains, ensuring their proper folding, biological activity, and regulation of cellular functions.
VIR-165, a modified form of virus inhibitory peptide (VIRIP), corresponds to residues 353 to 372 in the C-proximal region of human alpha1-antitrypsin, the most abundant circulating serine protease inhibitor. VIRIP inhibits a wide variety of human immune responses.
Type A Allatostatin I is a tridecapeptide that falls under the category of pleiotropic neuropeptides. These neuropeptides are known for their ability to inhibit the synthesis of juvenile hormone in insects.