Snapshot of a DNA Polymerase while Incorporating Two Consecutive C5-Modified Nucleotides

Functional nucleotides are important in many cutting-edge biomolecular techniques. Often several modified nucleotides have to be incorporated consecutively. This structural study of KlenTaq DNA polymerase, a truncated form of <i>Thermus aquaticus</i> DNA polymerase, gives first insights how multiple modifications are processed by a DNA polymerase and, therefore, contribute to the understanding of these enzymes in their interplay with artificial substrates