# OC Root 2nd 3rd 4th PC Gene/Definition OC.640037 Bacteria.302879 Firmicutes.123482 Firmicutes___Clostridia.54274 hmo.1897 hmo:HM1_2074 thiC; thiamine biosynthesis protein, thic OC.640037 Bacteria.302879 Firmicutes.123482 Firmicutes___Clostridia.54273 cthm.1351 cthm:CFE_1390 hydroxymethylpyrimidine synthase; K03147 phosphomethylpyrimidine synthase [EC:4.1.99.17]