xcv:XCV1602 meth; 5-methyltetrahydrofolate--homocysteine methyltransferase (EC:2.1.1.13); K00548 5-methyltetrahydrofolate--homocysteine methyltransferase [EC:2.1.1.13] xcv:XCV1603 meth; 5-methyltetrahydrofolate--homocysteine methyltransferase (EC:2.1.1.13); K00548 5-methyltetrahydrofolate--homocysteine methyltransferase [EC:2.1.1.13] xcv:XCV0842 metF; 5,10-methylenetetrahydrofolate reductase (EC:1.5.1.20); K00297 methylenetetrahydrofolate reductase (NADPH) [EC:1.5.1.20] xcv:XCV1604 ArsR family transcriptional regulator; K03892 ArsR family transcriptional regulator