PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15039302-8 2004 In the case of hydantoins, only mephenytoin and ethotoin, which have an alkylchain at the R1-position, strongly activated hPXR at 300 microM. Mephenytoin 32-43 nuclear receptor subfamily 1 group I member 2 Homo sapiens 122-126