# OC Root 2nd 3rd 4th PC Gene/Definition OC.24074 Bacteria.281969 Firmicutes.229582 Firmicutes___Clostridia.17500 swo.1122 swo:Swol_1171 3-hydroxyacyl-CoA dehydrogenase; K00074 3-hydroxybutyryl-CoA dehydrogenase [EC:1.1.1.157]