# OC Root 2nd 3rd 4th PC Gene/Definition OC.208993 Archaea.2346 Euryarchaeota.15302 Methanosphaera.423 mst.1083 mst:Msp_1164 predicted ABC-type nitrate/sulfonate/bicarbonate transport system, periplasmic solute-binding protein; K02051 NitT/TauT family transport system substrate-binding protein OC.208993 Archaea.2346 Euryarchaeota.15302 Methanosphaera.423 metb.144 metb:AW729_00005 nitrate ABC transporter substrate-binding protein; K02051 NitT/TauT family transport system substrate-binding protein