# OC Root 2nd 3rd 4th PC Gene/Definition OC.252125 Archaea.8674 Crenarchaeota.17085 Staphylothermus.1707 smr.659 smr:Smar_0667 Radical SAM domain protein OC.252125 Archaea.8674 - - kcr.747 kcr:Kcr_0778 Radical SAM domain protein