Potent endogenous neuropeptide S receptor (NSPR) agonist (EC50 = 3.2 nM). Increases locomotor activity and wakefulness in mice. Also reduces anxiety-like behavior in mice.

Potent, selective peptide agonist for the neuropeptide Y Y5 receptor (IC50 values for inhibition of NPY binding to human Y5, Y1, Y2 and Y4 receptors are 0.24, 530, > 500, and 51 nM respectively, Ki at Y5 = 0.1 - 0.15 nM). Stimulates food intake in vivo.

The chimeric peptide M35 [galanin (1-13)-bradykinin(2-9) amide] is a high-affinity galanin receptor ligand acting as a galanin receptor antagonist in the rat spinal cord, rat hippocampus and isolated mouse pancreatic islets. The radiolabelled M35 and performed equilibrium binding studies with [125I] M35 on the rat pancreatic beta-cell line Rin m 5F.