Steady-state kinetic analysis of DNA polymerase single-nucleotide incorporation products.

O'Flaherty DK, Guengerich FP
Curr Protoc Nucleic Acid Chem. 2014 59: 7.21.1-13

PMID: 25501593 · PMCID: PMC4274652 · DOI:10.1002/0471142700.nc0721s59

This unit describes the experimental procedures for the steady-state kinetic analysis of DNA synthesis across DNA nucleotides (native or modified) by DNA polymerases. In vitro primer extension experiments with a single nucleoside triphosphate species followed by denaturing polyacrylamide gel electrophoresis of the extended products is described. Data analysis procedures and fitting to steady-state kinetic models is presented to highlight the kinetic differences involved in the bypass of damaged versus undamaged DNA. Moreover, explanations concerning problems encountered in these experiments are addressed. This approach provides useful quantitative parameters for the processing of damaged DNA by DNA polymerases.

Copyright © 2014 John Wiley & Sons, Inc.

MeSH Terms (7)

DNA DNA-Directed DNA Polymerase DNA Damage Electrophoresis, Polyacrylamide Gel Kinetics Models, Chemical Nucleotides

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