Galanin has different activities such as contraction of smooth muscle of the gastrointestinal and genito-urinary tract, regulation of growth hormone and insulin release, and control of adrenal secretion.Human: H-Gly-Trp-Thr-Leu-Asn-Ser-Ala-Gly-Tyr-Leu-Leu-Gly-Pro-His-Ala-Val-Gly-Asn-His-Arg-Ser-Phe-Ser-Asp-Lys-Asn-Gly-Leu-Thr-Ser-OH or H-GWTLNSAGYLLGPHAVGNHRSFSDKNGLTS-OH