Motilin is important for interdigestive gastrointestinal motility and indirectly causes the contraction of duodenal and colonic smooth muscle.Canine: H-Phe-Val-Pro-Ile-Phe-Thr-His-Ser-Glu-Leu-Gln-Lys-Ile-Arg-Glu-Lys-Glu-Arg-Asn-Lys-Gly-Gln-OH or H-FVPIFTHSELQKIREKERNKGQ-OH