The nonapeptide 149,YFPGQFAFS157 (chemerin-9), corresponding to the C terminus of processed chemerin, retained most of the activity of the full-size protein, with regard to agonism toward the chemerinR.the natural ligand of ChemR23 (chemerinR).

Amyloid (1-42), rat is a polypeptide composed of 42 amino acids. It is toxic to hippocampal slices and can be used in the study of alzheimer's disease.

β-Amyloid (29-40) is a fragment of Amyloid-β peptide.Alzheimer's beta amyloid peptide (29-40/42) C-terminal fragments have physical and chemical properties related to those of fusion peptides of viral proteins. The fusion of liposomes can be induced by these peptides in vitro.