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FEBS Lett. 2011 Sep 16;585(18):2826-30. doi: 10.1016/j.febslet.2011.03.069. Epub 2011 Apr 8.

Ubiquitylation of DNA polymerase λ.

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Institute for Veterinary Biochemistry and Molecular Biology, University of Zürich-Irchel, Winterthurerstrasse 190, 8057 Zürich, Switzerland.


DNA polymerase (pol) λ, one of the 15 cellular pols, belongs to the X family. It is a small 575 amino-acid protein containing a polymerase, a dRP-lyase, a proline/serine rich and a BRCT domain. Pol λ shows various enzymatic activities including DNA polymerization, terminal transferase and dRP-lyase. It has been implicated to play a role in several DNA repair pathways, particularly base excision repair (BER), non-homologous end-joining (NHEJ) and translesion DNA synthesis (TLS). Similarly to other DNA repair enzymes, pol λ undergoes posttranslational modifications during the cell cycle that regulate its stability and possibly its subcellular localization. Here we describe our knowledge about ubiquitylation of pol λ and the impact of this modification on its regulation.

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