PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6696440-9 1984 The ratio of N-acetyl- to N-glycolylneuraminic acid in dopamine beta-hydroxylase and the glycoproteins of chromaffin granule membranes is approximately 1.5:1, which is within the same range as that previously found in membrane gangliosides and in the chromogranins isolated from the soluble granule matrix. isospaglumic acid 13-22 dopamine beta-hydroxylase Bos taurus 55-80