# OC Root 2nd 3rd 4th PC Gene/Definition OC.647111 Archaea.19191 Euryarchaeota.19553 Halodesulfurarchaeum.1374 halh.472 halh:HTSR_0486 RDD domain containing protein OC.647111 Archaea.19191 Euryarchaeota.19553 Halodesulfurarchaeum.1374 hhsr.460 hhsr:HSR6_0470 RDD domain containing protein