dUMP + formaldehyde + NADPH + H(+) <=> dTMP + NADP(+) + H2O
dump + formaldehyde + nadph + h(+) <=> dtmp + nadp(+) + h2o
dUMP + formaldehyde + NADPH + H(+) <=> dTMP + NADP(+) + H2O
dump + formaldehyde + nadph + h(+) <=> dtmp + nadp(+) + h2o