Secretin (33-59), rat (TFA) is a 27-aa peptide, which acts on secretin receptor, and enhances the secretion of bicarbonate, enzymes, and K+ from the pancreas.

delphinidin

This is amino acids 86 to 100 fragment of class II-associated invariant chain peptide called CLIP. The major histocompatibility complex class II molecule displays peptide fragments of foreign proteins to trigger a defensive reaction from the immune system. Before insertion of the foreign peptides into the binding groove, a place-holding peptide CLIP is removed. This is accomplished by the molecule DM, which is shown to increase the dissociation rate of a CLIP peptide from class II.