SMUG1 and infection: Among DNA repair-related genes, there are several encoding for enzymes involved in DNA metabolism that were induced upon infection such as polymerase (DNA directed) kappa (POLK), polymerase (DNA directed) beta (POLB), RecQ protein-like (DNA helicase Q1-like) (RECQL), and single-strand-selective monofunctional uracil-DNA glycosylase 1 (SMUG1).