# OC Root 2nd 3rd 4th PC Gene/Definition OC.508886 Archaea.25673 Euryarchaeota.28440 Methanocella.1792 mpd.193 mpd:MCP_0081 family X DNA polymerase; K02347 DNA polymerase (family X) OC.508886 Archaea.25673 Euryarchaeota.28440 Methanocella.1792 mez.755 mez:Mtc_0766 polX; DNA polymerase IV (family X); K02347 DNA polymerase (family X) OC.508886 Archaea.25673 Euryarchaeota.28440 Methanocella.1792 rci.803 rci:RCIX1179 polX; DNA-directed DNA polymerase X; K02347 DNA polymerase (family X)