# OC Root 2nd 3rd 4th PC Gene/Definition OC.80273 Archaea.41722 Crenarchaeota.8829 Ignicoccus.176 iho.1186 iho:Igni_1200 histone deacetylase superfamily OC.80273 Archaea.41722 Crenarchaeota.8829 Ignicoccus.176 iis.1249 iis:EYM_06740 hypothetical protein