An agonist of NPY receptors; reduces forskolin-induced cAMP accumulation in L-M(TK-) cells recombinantly expressing human and rat Y4 receptors (EC50s = 87.1 and 36.3 pM, respectively); binds to human Y1 and Y5 receptors (Kis = 19 and 3.9 nM, respectively); induces contractile responses in isolated rat colon (EC50s = 1.6 and 0.7 nM for ascending and descending colon segments, respectively); increases food intake in rats (0.7-7 nmol, i.c.v.)