Snapshots of transcription: Movement of a single molecule of T7 RNA polymerase (RNAP) along a double-stranded DNA (dsDNA) template attached to a DNA origami platform (green, see scheme) was recorded using high-speed AFM. A one kilobase template dsDNA containing the T7 promoter was used to record AFM images of transcription of the template dsDNA by RNAP and the resulting biotinylated RNA product was detected by streptavidin-labeling.
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