# OC Root 2nd 3rd 4th PC Gene/Definition OC.34301 Bacteria.503330 Proteobacteria.155297 Alphaproteobacteria.2120 paby.371 paby:Ga0080574_TMP1273 carbamoyl-phosphate synthase small subunit; K01956 carbamoyl-phosphate synthase small subunit [EC:6.3.5.5]