# OC Root 2nd 3rd 4th PC Gene/Definition OC.40401 Archaea.48284 Crenarchaeota.20746 - iag.553 iag:Igag_0550 oligopeptide/dipeptide ABC transporter, ATPase subunit; K02031 peptide/nickel transport system ATP-binding protein OC.40402 Archaea.7739 Crenarchaeota.14419 Desulfurococcus.1721 dmu.544 dmu:Desmu_0554 oligopeptide/dipeptide ABC transporter, ATPase subunit