in purine biosynthesis , the activities of the de novo synthetic enzymes , imp dehydrogenase , formylglycinamidine ribonucleotide ( fgam ) synthase , gmp synthase , amidophosphoribosyl-transferase ( at ) and adenylosuccinate synthase were 16 , 8 , 107 , 78 and 124 nmol/hr/mg protein , respectively , and those of the salvage enzymes , adenine , hypoxanthine and guanine phosphoribosyl-transferases , were 340 , 407 , and 1018 nmol/hr/mg protein , respectively .
C0034140
purine
C0001407
adenine