PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 30084801-3 2018 Methionine synthase (MTR), a key enzyme of folate metabolism, is involved in the early embryonic development. Folic Acid 43-49 5-methyltetrahydrofolate-homocysteine methyltransferase Homo sapiens 0-19