Urocortin II (UCN2) is a 41aa long endogenous peptide (human) in the corticotrophin-releasing factor (CRF) family. UCN2 decreases food intake and delays gastric emptying activity. Urocortin II is a specific ligand for the corticotropin-releasing hormone receptor type 2 (CRHR2), therefore acts as the endogenous ligand for maintaining homeostasis after stress.Human: H-Ile-Val-Leu-Ser-Leu-Asp-Val-Pro-Ile-Gly-Leu-Leu-Gln-Ile-Leu-Leu-Glu-Gln-Ala-Arg-Ala-Arg-Ala-Ala-Arg-Glu-Gln-Ala-Thr-Thr-Asn-Ala-Arg-Ile-Leu-Ala-Arg-Val-Gly-His-Cys-NH2 or H-IVLSLDVPIGLLQILLEQARARAAREQATTNARILARVGHC-NH2