the 3 ' -- -- 5 ' exonuclease activities of t4 dna polymerase and the klenow fragment of polymerase i towards the phosphoryl and thiophosphoryl 3',5 ' linkage were examined under comparable conditions of idling-turnover , duplex hydrolysis and turnover during polymerization .
C1335439
polymerase
C0314672
polymerization