# OC Root 2nd 3rd 4th PC Gene/Definition OC.637078 Bacteria.360136 Firmicutes.33320 Firmicutes___Clostridia.21120 hhl.1656 hhl:Halha_1839 5,10-methenyltetrahydrofolate synthetase; K01934 5-formyltetrahydrofolate cyclo-ligase [EC:6.3.3.2]