PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8331574-8 1993 Interestingly, OPZ-SFN also inhibited competitively 4"-hydroxylation of S-mephenytoin with a Ki value of 8.2 microM. Mephenytoin 72-85 RNA exonuclease 2 Homo sapiens 19-22