PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11456705-4 2001 This similarity is consistent with the presence of two axial ligands to the heme iron within the PS2.M--hemin complex, one of which is a water molecule. Iron 81-85 taste 2 receptor member 64 pseudogene Homo sapiens 97-100