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

Figure 1.

Figure 1

Oligonucleotide model for the PE reaction. The Cy-3′-labeled primer (P) was extended with selected polymerases in the presence of a nucleotide mixture (dATP, dGTP, dCTP, and Y). Red arrows point to sites of nucleotide Y incorporation in the primer or template (M) strands. Cy3 (green) and Cy5 (red) fluorescent labels make detection of the reaction products in the polyacrylamide gel possible via two separate channels.