PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1868258-2 1991 APRT activity was assayed by a non-radiochemical method in which adenosine monophosphate (AMP) and AMP metabolites produced from a substrate adenine were converted to inosine by alkaline phosphatase and adenosine deaminase. Inosine 167-174 adenine phosphoribosyltransferase Homo sapiens 0-4 3436062-2 1987 Both enzyme reactions of APRT and HPRT in lysates treated with a charcoal-dextran were simultaneously carried out in the same reaction tube and the enzyme activities were determined by measuring the increases in absorbance at 260 nm of adenosine and inosine converted from adenosine-5"-monophosphate and inosine-5"-monophosphate with alkaline phosphatase. Inosine 250-257 adenine phosphoribosyltransferase Homo sapiens 25-29 2445224-4 1987 The basis of the spectrophotometric assay is the absorbance change at 265 nm associated with the enzymatic conversion of PRPP into inosine, catalyzed by the sequential action of partially purified adenine phosphoribosyltransferase, commercial 5"-nucleotidase, and commercial adenosine deaminase, in the presence of excess adenine. Inosine 131-138 adenine phosphoribosyltransferase Homo sapiens 197-230