PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17490952-6 2007 Conversely, histamine N-methyltransferase, the other important enzyme inactivating histamine, is a cytosolic protein that can convert histamine only in the intracellular space of cells. Histamine 83-92 histamine N-methyltransferase Homo sapiens 12-41