PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2543694-2 1989 MPTP is metabolized to 1-methyl-4-phenylpyridine (MPP+), which is a primary neurotoxin, by monoamine oxidase B. 1-Methyl-4-phenylpyridinium 23-48 monoamine oxidase B Homo sapiens 91-110