PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8221972-2 1993 Among them, 4-(2-thienyl)butanoyl derivatives (V-24--27) showed more potent PEP-inhibitory activity than SUAM-1221. 4-(2-thienyl)butanoyl derivatives 12-45 prolyl endopeptidase Canis lupus familiaris 76-79