# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.10685 Archaea.55822 Euryarchaeota.40325 Archaeoglobus.2066 Archaeoglobus_fulgidus.531 afu.1448 afu:AF_1483 signal-transducing histidine kinase OC.10685 Archaea.55822 Euryarchaeota.40325 Archaeoglobus.2066 Archaeoglobus_fulgidus.531 afg.1626 afg:AFULGI_00017340 PAS domain protein S-box