**10. Abbreviations**

APE1: Apurinic/apyrimidinic endonuclease As(III): Arsenite BER: Base excision rapair BPDE: Benzo[a]pyrene diol epoxide CPD: Cyclobutane pyrimidine dimers DFG: Deutsche Forschungsgemeinschaft, German Research Foundation DMA(III): Dimethylarsinous acid DMA(V): Dimethylarsinic acid dRP: 5′-deoxyribose-5-phosphate ERCC1: Excision repair cross-complement 1 Fpg: Formamidopyrimidine-DNA glicosylase GSH: Reduced glutathione GST: Total glutathione S-transferase IARC: International Agency for Research on Cancer MMA(III): Monomethylarsonous acid MMA(V): Monomethylarsonic acid MMR: Mismatch repair MT: Metallothioneins NER: Nucleotide excision repair PARP: Poly(ADP-ribose) polymerase Pol β: Polymerase β ROS: Reactive oxygen species XPA: Xeroderma pigmentosum A XPAzf: Zinc finger domain of the human XPA protein XPC: Xeroderma pigmentosum complementation group C
