evolution |
evolutionary dynamics of the SOS response involving the LexA enzyme, overview. The composition of the SOS genetic network and the binding motif of its transcriptional repressor, LexA, vary greatly across bacterial clades. Multiple sequence alignment of available LexA protein sequences for the phylum Verrucomicrobia, using the information in Escherichia coli LexA cyrstal structure (UniProt ID P0A7C2). The core Verrucomicrobia LexA regulon comprises three operons involved in DNA repair and mutagenesis, i.e. lexA, splB, and imuA-imuB-dnaE2. The Verrucomicrobia LexA regulon is highly variable and incorporates novel functions, overview |
Verrucomicrobia |
physiological function |
the SOS response is the primary bacterial mechanism to address DNA damage, coordinating multiple cellular processes that include DNA repair, cell division, and translesion synthesis. In contrast to other regulatory systems, the composition of the SOS genetic network and the binding motif of its transcriptional repressor, LexA, vary greatly across bacterial clades |
Verrucomicrobia |