PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 34977903-7 2021 The observation of catalytic promiscuity in hMAT2A led to the detection of a new human metabolite, methyl thioguanosine, that is produced at elevated levels in a cancer cell line. methyl thioguanosine 99-119 methionine adenosyltransferase 2A Homo sapiens 44-50