# OC Root 2nd 3rd 4th PC Gene/Definition OC.643053 Archaea.13756 Euryarchaeota.10569 Geoglobus.266 gac.1346 gac:GACE_1407 UspA domain protein OC.643053 Archaea.13756 Euryarchaeota.10569 Geoglobus.266 gah.1368 gah:GAH_01448 Universal stress protein UspA