PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10339403-7 1999 However, mutation of the serine residue at position 121 of UGT2B17 to a tyrosine, as found in UGT2B15, abolished the ability of UGT2B17 to conjugate androsterone at the 3alpha position, but still retained activity for dihydrotestosterone and 5alpha-androstane-3alpha, 17beta-diol, which have an OH-group at the 17beta position. 5alpha-androstane-3alpha 242-266 UDP glucuronosyltransferase family 2 member B15 Homo sapiens 94-101