# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.277488 Bacteria.331316 Spirochaetes.21952 Spirochaeta.377 Spirochaeta_thermophila.36 sta.1030 sta:STHERM_c10650 K+-dependent Na+/Ca+ exchanger related-protein; K07301 cation:H+ antiporter OC.277488 Bacteria.331316 Spirochaetes.21952 Spirochaeta.377 Spirochaeta_thermophila.36 stq.1057 stq:Spith_1092 Na+/Ca+ antiporter, CaCA family; K07301 cation:H+ antiporter OC.277489 Bacteria.749037 Chlamydiae.7062 - - sng.1667 sng:SNE_A17740 Na+/Ca+ antiporter, CaCA family; K07301 cation:H+ antiporter