PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10222010-3 1999 At the moment, only radioisotopic methods are available for assaying PNPase in crude extracts; these involve incubating [32P]phosphate and poly(A) in the presence of the enzyme, separating [32P]phosphate from [32P]ADP, and quantifying ADP by scintillation counting. Phosphates 125-134 polyribonucleotide nucleotidyltransferase 1 Homo sapiens 69-75