# OC Root 2nd 3rd 4th PC Gene/Definition OC.508954 Bacteria.316011 - - vbl.1876 vbl:L21SP4_02058 polX; DNA polymerase/3'-5' exonuclease PolX; K02347 DNA polymerase (family X) OC.508955 Bacteria.316015 Proteobacteria.621762 Deltaproteobacteria.138922 sat.345 sat:SYN_00286 DNA polymerase IV; K02347 DNA polymerase (family X)