PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10409709-4 1999 The activity was equally high toward ADP/ATP, GDP/GTP, and UDP/UTP and approximately 50% less toward CDP/CTP and thiamine pyrophosphate, but there was no activity toward GMP, indicating that the Ynd1 protein belongs to the apyrase family. Thiamine Pyrophosphate 113-135 apyrase Saccharomyces cerevisiae S288C 195-199