PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 32257815-4 2020 MTRR enzyme is a key regulator of the methionine and folate cycles. Folic Acid 53-59 5-methyltetrahydrofolate-homocysteine methyltransferase reductase Mus musculus 0-4