PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3949732-1 1986 Adrenal chromaffin granules must shuttle reducing equivalents from the cytosol inward to reduce ascorbic acid oxidized during norepinephrine biosynthesis by intragranular dopamine-beta-hydroxylase. Norepinephrine 126-140 dopamine beta-hydroxylase Bos taurus 171-196