PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16497940-6 2006 To measure enzyme activity, we immobilized anti-IDS antibody on microtiter plates to capture the enzyme and measured its activity with the fluorogenic substrate 4-methylumbelliferyl sulfate. 4-methylumbelliferyl sulfate 161-189 iduronate 2-sulfatase Homo sapiens 48-51