PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 28218743-2 2017 Vitamin D is activated through hydroxylation by 25-hydroxylases (CYP2R1 or CYP27A1) and 1alpha-hydroxylase (CYP27B1) to produce 1,25(OH)2D3, or through the action of CYP11A1 to produce mono-di- and trihydroxy-D3 products that can be further modified by CYP27B1, CYP27A1, and CYP24A1. 25(oh)2d3 130-139 cytochrome P450 family 2 subfamily R member 1 Homo sapiens 65-71