PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15907343-6 2005 The pyroglutamate modification characteristic of the short apelin peptide (Pyr(1))apelin-13 indicates paramount biological importance of this peptide. Pyrrolidonecarboxylic Acid 4-17 apelin Homo sapiens 59-65 15907343-6 2005 The pyroglutamate modification characteristic of the short apelin peptide (Pyr(1))apelin-13 indicates paramount biological importance of this peptide. Pyrrolidonecarboxylic Acid 4-17 apelin Homo sapiens 82-88