PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21193311-4 2011 A search for estramustine phosphate analogs led to identification of two triterpenoids, enoxolone, and celastrol, having Shp2 PTP inhibitor activity. triterpenoids 73-86 protein tyrosine phosphatase non-receptor type 11 Homo sapiens 121-125