PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9240350-2 1997 Several important auxiliary binding sites of the 5HT1B-like receptor have been proposed following various modifications to the 2-substituent and especially to the methylene- or ethylene-linked 5-side chain. ethylene 164-172 5-hydroxytryptamine receptor 1B Homo sapiens 49-54