methylenetetrahydrofolate---tRNA-(uracil54-C5)-methyltransferase [NAD(P)H-oxidizing]; folate-dependent ribothymidyl synthase; methylenetetrahydrofolate-transfer ribonucleate uracil 5-methyltransferase; 5,10-methylenetetrahydrofolate:tRNA-UPsiC (urac • • •