PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2063521-11 1991 When adenine phosphoribosyltransferase is absent, deficient, or inhibited, adenine is oxidized to 2,8 dihydroxyadenine, which is extremely insoluble at physiological pH. 2,8-dihydroxyadenine 98-118 adenine phosphoribosyltransferase Bos taurus 5-38