PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9461487-0 1998 Mutagenesis of the aspartic acid ligands in human serum transferrin: lobe-lobe interaction and conformation as revealed by antibody, receptor-binding and iron-release studies. Aspartic Acid 19-32 transferrin Homo sapiens 56-67