PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10891341-7 2000 We finally confirmed the ADP-ribosyl cyclase activity of the expressed CD38 by measuring its ability to catalyze the cyclization of the nicotinamide adenine dinucleotide (NAD(+)) surrogate, NGD(+), to its fluorescent nonhydrolyzable derivative, cGDPr. cyclic guanosine diphosphate-ribose 245-250 CD38 antigen Mus musculus 71-75