Nikaido, Marmelstein, Murray & Oram
Motlin-like polypeptide and use thereof
 A pharmaceutical composition for stimulating peristaltic contraction in the intestinal canal which contains a pharmaceutically acceptable carrier or excipient and an effective amount of a polypeptide, or a salt thereof, having a pharmacological activity similar to motilin. The polypeptide has the formula B.sub.1 -Z.sub.1 -A.sub.1 -Z.sub.2 -B.sub.2 -Thr-B.sub.3 -A.sub.2 -Glu-Z.sub.3 -C-Arg-X'-Gln-Glu-Lys-Glu-Arg-D-Lys-Gly-E-Y, with Z.sub.1,Z.sub.2 and Z.sub.3 each being an amino acid residue having a hydrophobic side-chain, A.sub.1 and A.sub.2 each being an amino acid residue such as Pro, Gly, Asn and Ser, B.sub.1, B.sub.2 and B.sub.3 are each an amino acid residue having a side-chain with an aromatic ring, C is Gln, Glu or Asp, D is Asn, Glu or Asp, X' is an amino acid residue other than Met, E is Gln, Lys or Arg, and Y is homoserine, homoserine-lactone or a peptide chain having amino acid residues not exceeding 10 and containing homoserine or homoserine-lactone at the C-terminal where the first amino acid of said peptide chain is other than Lys, Arg or Pro. 
Sanwa Kagaku Kenkyusho Co. Ltd.
A C C
A61K C07K C07K
additional additional inventional
Kenichi Masayasu Kiichi Takahiko Yuji Haruo Yohei Katsuya
Tanaka Kurono Sawai Mitani Hayashi Takahashi Kobayashi Fujimura