PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8323292-3 1993 When intact E. coli cells were used for analysis, the truncated P450c17 showed the typical cytochrome P450 CO-difference spectrum and type I substrate binding spectra for pregnenolone, 17 alpha-hydroxypregnenolone, progesterone, and 17 alpha-hydroxyprogesterone. alpha-hydroxypregnenolone 188-213 cytochrome P450 family 17 subfamily A member 1 Homo sapiens 64-71