Operons and contextual network graph of the SRAP and ImuB-C containing proteins. Genes are represented as arrows, with the arrow head pointing from the 5’ to the 3’ direction. Operons are labeled with the gi number of the SRAP or ImuB-C gene in the neighborhood followed by the species name. Standard names of encoded domains are used to label genes, the rest being MPep, metallopeptidase; ATPDL, ATP-dependent DNA ligase. In the network graph, genes are represented as nodes, and edges indicate the gene context with the arrow head pointing to the gene in the 3’ direction of the neighborhood. Edges depicting genes arranged in diverging directions are shown with circular ends. Pfam DUF4130 is a predicted mutagenesis-related enzyme that is associated with the SplB-like radical SAM photolyases and uracil DNA glycosylases, which might modify thymines.