PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3222246-3 1988 The isolated mucin had a high content of threonine, serine, and proline, with 31% of the amino acid residues O-glycosylated. Proline 64-71 LOC100508689 Homo sapiens 13-18