# OC Root 2nd 3rd 4th PC Gene/Definition OC.168777 Bacteria.59746 Firmicutes.4548 Firmicutes___Clostridia.72217 pth.1849 pth:PTH_1859 MurB; UDP-N-acetylmuramate dehydrogenase; K00075 UDP-N-acetylmuramate dehydrogenase [EC:1.3.1.98]