Description_x000D_ Amino Acid Sequence_x000D_ Ala-Gly-Cys-Lys-Asn-Phe-Phe-Trp-Lys-Thr-Phe-Thr-Ser-Cys_x000D_ Biochem/physiol Actions_x000D_ Somatostatin regulates endocrine function and cell proliferation via interaction with G-protein-coupled somatostatin receptors. It exists in two active forms produced by alternative cleavage of a single preproprotein (14 aa and 28 aa forms). Somatosatin inhibits the release of growth hormone; thyroid-stimulating hormone and a range of gastrointestinal hormones: Cholecystokinin (CCK); Enteroglucagon; Gastrin; Gastric inhibitory polypeptide (GIP); Motilin; Secretin; Vasoactive intestinal peptide (VIP)._x000D_ Physical form_x000D_ powder-0 °C; stock-frozen in working aliquots, avoid repeated freeze/thaw_x000D_ Reconstitution_x000D_ To prepare 2 μg/ml stock solution, add 10 ml sterile culture medium.