# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.40749 Bacteria.23857 Firmicutes.60775 Firmicutes___Clostridia.105318 Clostridium.33855 Clostridium_sp_.3038 clb.2968 clb:Clo1100_3131 oligopeptide/dipeptide ABC transporter, ATP-binding protein; K02031 peptide/nickel transport system ATP-binding protein; K02032 peptide/nickel transport system ATP-binding protein