PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 487592-2 1979 Noradrenaline and adrenaline are converted to their O-methylated analogues, normethanephrine and metanephrine, by the enzyme catechol O-methyltransferase in the presence of tritiated S-adenosyl-L-methionine. Norepinephrine 0-13 catechol-O-methyltransferase Homo sapiens 125-153