# OC Root 2nd 3rd 4th PC Gene/Definition OC.257230 Bacteria.204557 Proteobacteria.278248 Deltaproteobacteria.42322 samy.1946 samy:DB32_001705 Transcriptional regulator, LysR family protein; K18297 LysR family transcriptional regulator, mexEF-oprN operon transcriptional activator