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. 2017 Jul 27;7:6674. doi: 10.1038/s41598-017-06136-9

Figure 4.

Figure 4

Gel-electrophoresis of the PE reactions in the presence of different exonuclease-deficient and proofreading DNA polymerases at 72 °C. The reaction was performed for 2 h at dNTP concentrations of 200 μM. The ability to modify the sequence ends decreases in the following order for non-proofreading polymerases: Taq > Vent (exo-) > DeepVent (exo-) > Bst 2.0. The Therminator polymerase yields poor primer extension. The proofreading polymerases Pfu and Phusion can modify the M strand via terminal dT/Y exchange.