# OC Root 2nd 3rd 4th PC Gene/Definition OC.205647 Archaea.76731 Euryarchaeota.62062 Thermococcus.8544 tsi.812 tsi:TSIB_0822 permease for cytosine/purines, uracil, thiamine, allantoin OC.205647 Archaea.76731 Euryarchaeota.62062 Thermococcus.8544 tlt.358 tlt:OCC_02332 permease; K10974 cytosine permease