# OC Root 2nd 3rd 4th PC Gene/Definition OC.232538 Archaea.45428 Crenarchaeota.17046 Staphylothermus.1618 smr.73 smr:Smar_0071 ABC-type nitrate/sulfonate/bicarbonate transport systems periplasmic components-like protein; K02051 NitT/TauT family transport system substrate-binding protein