PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 190081-2 1977 In a series of motilin peptides, elimination of the pentapeptide from the amino terminus decreased the activity (in vitro contraction of rabbit duodenal muscle) to 1/250 of the whole molecule, and subsequent removal of the tripeptide Thr-Tyr-Gly resulted in the complete loss of its effects, In a series of gastric inhibitory peptides, two fragments corresponding to positions 1 to 28 and 26 to 43 were both inactive. Thr-Tyr-Gly 234-245 promotilin Oryctolagus cuniculus 15-22