# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.674705 Bacteria.174563 Proteobacteria.29997 Alphaproteobacteria.149874 Sulfitobacter.13669 spse.3861 spse:SULPSESMR1_03963 helix-turn-helix domain protein; K03892 ArsR family transcriptional regulator, arsenate/arsenite/antimonite-responsive transcriptional repressor