PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 25913862-2 2015 When the monophenolase and the diphenolase activities of tyrosinase on its physiological substrates l-dopa and/or l-tyrosine are measured in the presence of these compounds, the rate of action of the enzyme decreases. Levodopa 100-106 tyrosinase Homo sapiens 57-67