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. Author manuscript; available in PMC: 2011 Aug 6.
Published in final edited form as: J Mol Biol. 2010 Jun 9;401(1):33–44. doi: 10.1016/j.jmb.2010.06.001

Table 2.

Pre-steady state kinetics of extension from a mismatched primer terminus

Mismatch RT kpol (s−1)a Kd (µM)a kpol/Kd (µM−1 s−1)a Mismatched Extension Fidelityb,c Fold Change to Wild Type
A:G WT 1.06 ± 0.325 42.1 ± 5.37 0.0245 ± 0.0049 129
K65R 1.45 ± 0.876 543.3 ± 45.11 0.0028 ± 0.0018 436 3
K65A 0.239 ± 0.076 2175 ± 910.4 0.00011 ± 0.00006 3987 31
G:T WT 34.3 ± 10.6 369.9 ± 14.2 0.0923 ± 0.0250 35
K65R 14.2 ± 0.025 251.9 ± 36.1 0.0571 ± 0.0083 22 0.6
K65A 7.02 ± 0.264 934.0 ± 254.6 0.0078 ± 0.0024 60 1.7
a

Values represent averages and standard deviations from at least two independent experiments.

b

Calculated as [(kpol/Kd)matched + (kpol/Kd)mismatched]/(kpol/Kd)mismatched

c

Compared to (kpol/Kd)matched from Table 1