# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.509938 Bacteria.288903 Proteobacteria.118914 Gammaproteobacteria.209062 Thioglobus.293 tsn.53 tsn:W908_00180 iron-sulfur cluster insertion protein ErpA; K15724 iron-sulfur cluster insertion protein OC.509938 Bacteria.288903 Proteobacteria.118914 Gammaproteobacteria.209062 Thioglobus.293 tho.683 tho:SP60_03865 iron--sulfur cluster insertion protein ErpA; K15724 iron-sulfur cluster insertion protein