PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3681889-6 1987 The lack of activity as a substrate in 12 indicates that the negative steric interactions of the ethano bridging unit prohibits it from binding in a manner consistent with the known PNMT substrates exo-2-amino- (6) and anti-9-aminobenzonorbornene (8). -aminobenzonorbornene 225-246 phenylethanolamine N-methyltransferase Homo sapiens 182-186