# OC Root 2nd 3rd 4th PC Gene/Definition OC.509820 Bacteria.288911 Proteobacteria.118948 Alphaproteobacteria.338437 rbm.1454 rbm:TEF_07270 iron-sulfur cluster insertion protein ErpA; K15724 iron-sulfur cluster insertion protein OC.509848 Bacteria.495349 Proteobacteria.117979 Alphaproteobacteria.15025 rbm.869 rbm:TEF_04190 Fe-S cluster assembly scaffold SufA; K13628 iron-sulfur cluster assembly protein