# OC Root 2nd 3rd 4th PC Gene/Definition OC.257230 Bacteria.204557 Proteobacteria.278248 Deltaproteobacteria.42322 age.1467 age:AA314_01283 LysR-family transcriptional regulator; K18297 LysR family transcriptional regulator, mexEF-oprN operon transcriptional activator