PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 25467855-5 2015 Iron mediates electron transfer as an essential component of e.g. myeloperoxidase, hemoglobin, cytochrome C and ribonucleotide reductase. Iron 0-4 myeloperoxidase Homo sapiens 66-81