PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1518562-4 1992 Removal of sialic acid residues converted the multiple pl species to one form with a pl of 6.32 for NEP 2, and two forms with pls of 6.27 and 6.32 for NEP 1. N-Acetylneuraminic Acid 11-22 membrane metallo-endopeptidase-like 1 Rattus norvegicus 100-105