Kd: 1 nM (GalR1 receptor), 1 nM (GalR2 receptor)
Galanin (1-30), human (Gal 1-30 ) is an agonist of GalR1 and GalR2 receptors, with K i s of both 1 nM. Galanin (1-30), human displaces 125 I-labeled rat galanin with a K d of 0.5 nM. Galanin (1-30), human (hGal) causes contractions of isolated longitudinal rat fundus strips, with an ED 50 of 13.8 ± 1.6 nM.