PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 24140360-1 2014 Two nontypical nucleosides, 7-beta-D-ribosyl-2,6-diamino-8-azapurine and 8-beta-D-ribosyl-2,6-diamino-8-azapurine, have been found to exhibit moderately good, and selective, substrate properties toward calf and bacterial (Escherichia coli) forms of purine nucleoside phosphorylase (PNP). Nucleosides 15-26 purine nucleoside phosphorylase Homo sapiens 249-280