Methylmalonic acidemia is an inherited metabolic disorder,which is caused by deficiency of methylmalonyl-coenzyme A mutase or its cofactor adenosylcobalamin.
A method for fluorophotometric assay of dihydrofolate reductasc (DHFR) activity by the use of fluorescence properties of dihydrofolate (DHFA) and NADPH was developed.
The THFA product of hydrogenation in common pressure has been used in enzymatic reaction and expressed the same result as that of THFA from Sigma, the cost of reduction by hydroborates is lower.