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Comparison of DNA polymerase structures with primer and template bound

Comparison of DNA polymerase structures with primer and template bound
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Description: The four structures shown are oriented with respect to each other by superposition of the first two base pairs at the primer terminus.

Palm, thumb, and fingers are shown for each structure.

Taq polymerase is a thermostable enzyme used in PCR.

HIV-1RT is the reverse transcriptase (RNA-directed DNA polymerase) from human immunodeficiency virus.

RB69 gp43 is the replicative DNA polymerase encoded by RB69, a bacteriophage closely related to T4.

pol b is a eukaryotic DNA polymerase involved in DNA repair.

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