PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9047311-7 1997 Substrates which contain an ANSN leaving group had a higher affinity for tPA than substrates with p-nitroaniline or 7-amino-4-methylcoumarin leaving groups. 4-nitroaniline 98-112 plasminogen activator, tissue type Homo sapiens 73-76