TABLE 6.

Comparison of the average nucleotide selectivity for polymerase families A, B, D, X, and Y

Polymerase	Family	kpol/Kd correct	kpol/Kd incorrect	Nucleotide selectivitya
		μm−1 s−1	μm−1 s−1
KF (21)	A	11	1.2 × 10−3	4.1 × 104
RB69 (39)	B	2.9	1.1 × 10−5	2.7 × 105
9°N PolD (this work)	D	1.6	6.1 × 10−4	4.3 × 103
rPolβ (23)	X	5.0	5.9 × 10−4	3.3 × 104
Dpo4 (40)	Y	7.0 × 10−2	3.3 × 10−5	3.0 × 103

^a Calculated from (k_pol/K_d) correct/(k_pol/K_d) incorrect.