PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 24478550-4 2014 A principle of the determination of beta-galactosidase activity was fluorometric measurement of a deprotonated form of 4-methylumbelliferone released in the enzymatic reaction. Hymecromone 119-140 galactosidase beta 1 Homo sapiens 36-54