in the normal bone marrow , the specific activities of pyrimidine de novo synthetic enzymes , cdp reductase , dtmp synthase , ctp synthase , carbamoyl-phosphate synthase ii ( synthase ii ) , orotidine 5'-phosphate decarboxylase and aspartate carbamoyltransferase , were 1 , 2.7 , 5 , 10 , 63 and 601 nmol/hr/mg protein , respectively , whereas those of the salvage enzymes , deoxycytidine , thymidine , cytidine and uridine kinases were 3 , 43 , 149 , and 367 nmol/hr/mg protein , respectively .
C0011485
deoxycytidine
C0010715
cytidine