PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 437481-0 1979 Influence of the naturally occurring polyamines spermine, spermidine and putrescine on the kinetic properties of acetylcholinesterase. Polyamines 37-47 acetylcholinesterase Rattus norvegicus 113-133