Table 1.

E. coli BW25113 derivatives used in this investigation with different DNA repair pathways deleted

Derivative	Relevant genotype	Description	DNA repair mechanisms affected
JW0698	Δphr-758::kan	Deoxyribodipyrimidine photolyase	Photoreactivation
JW1625	Δnth-782::kan	Thymine glycol-DNA glycosylase (TG-DNA glycosylase) or endonuclease III	Base excision repair
JW4019	ΔuvrA753::kan	ATPase and DNA damage recognition protein of nucleotide excision repair excinuclease UvrABC	Nucleotide excision repair
JW1172	ΔumuD772::kan	Subunit D of DNA polymerase V	Translesion synthesis
JW2669	ΔrecA774::kan	DNA strand exchange and recombination protein with protease and nuclease activity	SOS response: RecA-mediated excision repair, translesion synthesis, and homologous recombination repair