# OC Root 2nd 3rd 4th PC Gene/Definition OC.511587 Archaea.30822 Euryarchaeota.34788 Methanosphaera.336 mst.1449 mst:Msp_1557 conserved hypothetical membrane-spanning protein OC.511587 Archaea.30822 Euryarchaeota.34788 Methanosphaera.336 metb.1343 metb:AW729_07520 hypothetical protein