to investigate the activation of aspartate- and alanine aminotransferases by pyridoxal-5'-phosphate , we determined the enzymatic activity in serum in two different ways : ( a ) preincubation of the serum alone or the serum with pyridoxal-5'-phosphate and starting the reaction by the addition of the serum sample or the serum sample + coenzyme , respectively .
C0034266
pyridoxal-5
C0009235
coenzyme