Mammalian DNA Polymerase Kappa Activity and Specificity

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Hannah R SternPenny J Beuning

Abstract

DNA polymerase (pol) kappa is a Y-family translesion DNA polymerase conserved throughout all domains of life. Pol kappa is special6 ized for the ability to copy DNA containing minor groove DNA adducts, especially N2-dG adducts, as well as to extend primer termini containing DNA damage or mismatched base pairs. Pol kappa generally cannot copy DNA containing major groove modifications or UV-induced photoproducts. Pol kappa can also copy structured or non-B-form DNA, such as microsatellite DNA, common fragile sites, and DNA containing G quadruplexes. Thus, pol kappa has roles both in maintaining and compromising genomic integrity. The expression of pol kappa is altered in several different cancer types, which can lead to genome instability. In addition, many cancer-associated single-nucleotide polymorphisms have been reported in the POLK gene, some of which are associated with poor survival and altered chemotherapy response. Because of this, identifying inhibitors of pol kappa is an active area of research. This review will address these activities of pol kappa, with a focus on lesion bypass and cellular mutagenesis.

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Citations

Aug 9, 2020·Nature Reviews. Genetics·Dali ZongAndré Nussenzweig
Jun 23, 2020·Biochemistry. Biokhimii︠a︡·E S ShilkinA V Makarova
Oct 30, 2020·Frontiers in Cellular and Infection Microbiology·Ana PovedaVinicio Armijos-Jaramillo
May 4, 2021·DNA Repair·Jacob O SpiegelJacob D Durrant
Aug 31, 2021·The Journal of Biological Chemistry·Pratibha P Ghodke, F Peter Guengerich

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