# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.337155 Bacteria.464386 Proteobacteria.467683 Alphaproteobacteria.330633 - pbr.556 pbr:PB2503_02692 riboflavin synthase subunit alpha; K00793 riboflavin synthase [EC:2.5.1.9] OC.337155 Bacteria.464386 Firmicutes.273642 Firmicutes___Clostridia.140473 Sulfobacillus.1303 say.255 say:TPY_0232 ribE; riboflavin synthase, alpha subunit; K00793 riboflavin synthase [EC:2.5.1.9] OC.337155 Bacteria.464386 Firmicutes.273642 Firmicutes___Clostridia.140473 Sulfobacillus.1303 sap.222 sap:Sulac_0212 riboflavin synthase alpha chain; K00793 riboflavin synthase [EC:2.5.1.9]