PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16278191-3 2005 The formation of norketobemidone from ketobemidone (1 microM) correlated best with CYP2C9 activity, measured as losartan oxidation (rs = 0.82, n = 19, p < 0.001), but there was also a strong correlation with CYP3A4 activity. ketobemidone 20-32 cytochrome P450 family 2 subfamily C member 9 Homo sapiens 83-89