PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16597434-1 2006 Steroid 21-hydroxylase, P450c21, is responsible for the conversion of progesterone and 17alpha-hydroxyprogesterone to their 21-hydroxylated derivatives. Progesterone 70-82 LOC107131127 Bos taurus 0-22