PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 30057155-5 2018 Biological investigations showed that (+)-ursolic acid (1) is the major cytotoxic component of S. corticosum, which exhibited also potent activities in the NF-kappaB and mitochondrial transmembrane potential (MTP) inhibition assays conducted, with IC50 values of 31 nM and 3.5 microM, respectively. ursolic acid 38-54 nuclear factor kappa B subunit 1 Homo sapiens 156-165