PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15256616-0 2004 Crystal structures of human cytochrome P450 3A4 bound to metyrapone and progesterone. Metyrapone 57-67 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 28-47 15256616-4 2004 Here we report three crystal structures of CYP3A4: unliganded, bound to the inhibitor metyrapone, and bound to the substrate progesterone. Metyrapone 86-96 cytochrome P450 family 3 subfamily A member 4 Homo sapiens 43-49